Auto sync setting, pretty notifications, background permissions,

reliable alarm scheduling

Auto sync:
- Configurable interval: 1/2/5/10/15/30/60 min (default 5)
- MemoRepository.syncIntervalMinutes updated live from DataStore
- Setting shown under "memos" section in settings

Notifications by priority:
- p1: 🔴 alarm sound, long vibration, wakes screen, bypasses DND
- p2: 🟠 notification sound, medium vibration, heads-up
- p3: 🔵 notification sound, short vibration
- none: silent, no vibration
- BigTextStyle with priority tag, colored accent bar
- 4 separate Android notification channels

Background reliability:
- FOREGROUND_SERVICE, WAKE_LOCK, REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- Battery optimization exemption requested on first launch
- DirectAlarmScheduler: schedules alarms directly from app process
  using live Room data (bypasses WorkManager DB sync issue)
- onContentChanged fires direct scheduling on every memo create/update
- TaskReminderReceiver moved to androidApp module for reliable
  cold-start instantiation
- WorkManager kept as 15-min backup for server-side changes

123 tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context)

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>

composeApp/src/androidMain/kotlin/com/avinal/memos/notifications/DirectAlarmScheduler.kt

@@ -0,0 +1,54 @@
+package com.avinal.memos.notifications
+
+import android.app.AlarmManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import com.avinal.memos.domain.Memo
+import com.avinal.memos.parser.TaskParser
+import kotlin.time.Clock
+import kotlinx.datetime.LocalTime
+import kotlinx.datetime.TimeZone
+
+object DirectAlarmScheduler {
+
+    fun scheduleFromMemos(context: Context, memos: List<Memo>) {
+        val allTasks = memos.flatMap { memo -> TaskParser.extractTasks(memo.id, memo.content) }
+        val nowMillis = Clock.System.now().toEpochMilliseconds()
+        val tz = TimeZone.currentSystemDefault()
+
+        val prefs = context.getSharedPreferences("memos_prefs", Context.MODE_PRIVATE)
+        val defaultTimeStr = prefs.getString("default_notify_time", "20:00") ?: "20:00"
+        val parts = defaultTimeStr.split(":")
+        val defaultTime = try { LocalTime(parts[0].toInt(), parts.getOrElse(1) { "0" }.toInt()) } catch (_: Exception) { LocalTime(20, 0) }
+
+        val alarms = ReminderScheduler.computeAlarms(allTasks, nowMillis, tz, emptySet(), defaultTime)
+        val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+
+        alarms.forEach { alarm ->
+            val receiverClass = try {
+                Class.forName("com.avinal.memos.TaskReminderReceiver")
+            } catch (_: Exception) {
+                TaskAlarmReceiver::class.java
+            }
+            val uniqueId = (alarm.taskId + alarm.triggerAtMillis.toString()).hashCode()
+            val intent = Intent(context, receiverClass).apply {
+                putExtra("task_text", alarm.taskText)
+                putExtra("due_label", alarm.label)
+                putExtra("notification_id", uniqueId)
+                putExtra("priority", alarm.priority)
+            }
+            val pendingIntent = PendingIntent.getBroadcast(
+                context, uniqueId, intent,
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+            )
+            try {
+                alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, alarm.triggerAtMillis, pendingIntent)
+            } catch (_: SecurityException) {
+                alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.triggerAtMillis, pendingIntent)
+            }
+        }
+
+        android.util.Log.d("DirectAlarmScheduler", "Scheduled ${alarms.size} alarms from ${memos.size} memos")
+    }
+}

composeApp/src/androidMain/kotlin/com/avinal/memos/notifications/TaskAlarmReceiver.kt

@@ -9,12 +9,15 @@ class TaskAlarmReceiver : BroadcastReceiver() {
         val taskText = intent.getStringExtra("task_text") ?: "Task reminder"
         val dueLabel = intent.getStringExtra("due_label") ?: "due"
         val notificationId = intent.getIntExtra("notification_id", 0)
+        val priority = intent.getIntExtra("priority", 0)
 
+        TaskNotificationManager.createChannels(context)
         TaskNotificationManager.showTaskNotification(
             context = context,
             notificationId = notificationId,
             taskText = taskText,
             dueLabel = dueLabel,
+            priority = priority,
         )
     }
 }

composeApp/src/androidMain/kotlin/com/avinal/memos/notifications/TaskCheckWorker.kt

@@ -25,6 +25,16 @@ class TaskCheckWorker(
         val scheduledIds = prefs.getStringSet("scheduled_ids", emptySet()) ?: emptySet()
         val nowMillis = Clock.System.now().toEpochMilliseconds()
 
+        // Read default notify time from DataStore file (shared prefs fallback)
+        val notifyPrefs = appContext.getSharedPreferences("memos_prefs", Context.MODE_PRIVATE)
+        val defaultTimeStr = notifyPrefs.getString("default_notify_time", "20:00") ?: "20:00"
+        val defaultTimeParts = defaultTimeStr.split(":")
+        val defaultTime = try {
+            kotlinx.datetime.LocalTime(defaultTimeParts[0].toInt(), defaultTimeParts.getOrElse(1) { "0" }.toInt())
+        } catch (_: Exception) {
+            kotlinx.datetime.LocalTime(20, 0)
+        }
+
         val db = Room.databaseBuilder<MemosDatabase>(
             context = appContext,
             name = appContext.getDatabasePath("memos.db").absolutePath,
@@ -45,12 +55,13 @@ class TaskCheckWorker(
                 android.util.Log.d("TaskCheckWorker", "Task: ${t.text}, date=${t.dueDate}, time=${t.dueTime}, reminder=${t.reminder}, completed=${t.isCompleted}, id=${t.id}")
             }
 
-            val alarms = ReminderScheduler.computeAlarms(allTasks, nowMillis, tz, scheduledIds)
+            android.util.Log.d("TaskCheckWorker", "nowMillis=$nowMillis, tz=$tz, defaultTime=$defaultTime")
+            val alarms = ReminderScheduler.computeAlarms(allTasks, nowMillis, tz, scheduledIds, defaultTime)
             android.util.Log.d("TaskCheckWorker", "Computed ${alarms.size} alarms")
 
             alarms.forEach { alarm ->
-                android.util.Log.d("TaskCheckWorker", "Scheduling: ${alarm.taskText} at ${alarm.triggerAtMillis} (${alarm.label})")
-                scheduleAlarm(alarmManager, alarm.taskId, alarm.taskText, alarm.label, alarm.triggerAtMillis)
+                android.util.Log.d("TaskCheckWorker", "Scheduling: ${alarm.taskText} at ${alarm.triggerAtMillis} (${alarm.label}) p=${alarm.priority}")
+                scheduleAlarm(alarmManager, alarm.taskId, alarm.taskText, alarm.label, alarm.triggerAtMillis, alarm.priority)
             }
 
             val newScheduledIds = scheduledIds.toMutableSet()
@@ -76,15 +87,23 @@ class TaskCheckWorker(
         taskText: String,
         dueLabel: String,
         triggerAtMillis: Long,
+        priority: Int = 0,
     ) {
-        val intent = Intent(appContext, TaskAlarmReceiver::class.java).apply {
+        val uniqueId = (alarmId + triggerAtMillis.toString()).hashCode()
+        val receiverClass = try {
+            Class.forName("com.avinal.memos.TaskReminderReceiver")
+        } catch (_: Exception) {
+            TaskAlarmReceiver::class.java
+        }
+        val intent = Intent(appContext, receiverClass).apply {
             putExtra("task_text", taskText)
             putExtra("due_label", dueLabel)
-            putExtra("notification_id", alarmId.hashCode())
+            putExtra("notification_id", uniqueId)
+            putExtra("priority", priority)
         }
         val pendingIntent = PendingIntent.getBroadcast(
             appContext,
-            alarmId.hashCode(),
+            uniqueId,
             intent,
             PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
         )

composeApp/src/androidMain/kotlin/com/avinal/memos/notifications/TaskNotificationManager.kt

@@ -5,24 +5,47 @@ import android.app.NotificationManager
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
-import android.os.Build
+import android.media.AudioAttributes
+import android.media.RingtoneManager
 import androidx.core.app.NotificationCompat
 
 object TaskNotificationManager {
 
-    private const val CHANNEL_ID = "task_reminders"
-    private const val CHANNEL_NAME = "Task Reminders"
+    private const val CHANNEL_P1 = "task_p1"
+    private const val CHANNEL_P2 = "task_p2"
+    private const val CHANNEL_P3 = "task_p3"
+    private const val CHANNEL_DEFAULT = "task_default"
 
-    fun createChannel(context: Context) {
-        val channel = NotificationChannel(
-            CHANNEL_ID,
-            CHANNEL_NAME,
-            NotificationManager.IMPORTANCE_DEFAULT,
-        ).apply {
-            description = "Reminders for tasks with due dates"
-        }
+    fun createChannels(context: Context) {
         val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-        manager.createNotificationChannel(channel)
+        val soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
+        val alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM)
+        val audioAttr = AudioAttributes.Builder()
+            .setUsage(AudioAttributes.USAGE_NOTIFICATION)
+            .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
+            .build()
+
+        manager.createNotificationChannel(NotificationChannel(CHANNEL_P1, "P1 — Urgent", NotificationManager.IMPORTANCE_HIGH).apply {
+            description = "High priority — alarm sound, strong vibration, wakes screen"
+            enableVibration(true); vibrationPattern = longArrayOf(0, 500, 200, 500, 200, 500)
+            setSound(alarmUri, audioAttr); lockscreenVisibility = android.app.Notification.VISIBILITY_PUBLIC; setShowBadge(true); setBypassDnd(true)
+        })
+        manager.createNotificationChannel(NotificationChannel(CHANNEL_P2, "P2 — Medium", NotificationManager.IMPORTANCE_HIGH).apply {
+            description = "Medium priority — notification sound, vibration"
+            enableVibration(true); vibrationPattern = longArrayOf(0, 300, 200, 300)
+            setSound(soundUri, audioAttr); lockscreenVisibility = android.app.Notification.VISIBILITY_PUBLIC; setShowBadge(true)
+        })
+        manager.createNotificationChannel(NotificationChannel(CHANNEL_P3, "P3 — Low", NotificationManager.IMPORTANCE_DEFAULT).apply {
+            description = "Low priority — notification sound, short vibration"
+            enableVibration(true); vibrationPattern = longArrayOf(0, 200)
+            setSound(soundUri, audioAttr); lockscreenVisibility = android.app.Notification.VISIBILITY_PUBLIC
+        })
+        manager.createNotificationChannel(NotificationChannel(CHANNEL_DEFAULT, "No Priority", NotificationManager.IMPORTANCE_LOW).apply {
+            description = "No priority — silent notification"
+            enableVibration(false); setSound(null, null)
+        })
+
+        manager.deleteNotificationChannel("task_reminders")
     }
 
     fun showTaskNotification(
@@ -30,6 +53,7 @@ object TaskNotificationManager {
         notificationId: Int,
         taskText: String,
         dueLabel: String,
+        priority: Int = 0,
     ) {
         val openIntent = context.packageManager.getLaunchIntentForPackage(context.packageName)?.apply {
             addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TOP)
@@ -39,16 +63,57 @@ object TaskNotificationManager {
             PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
         )
 
-        val notification = NotificationCompat.Builder(context, CHANNEL_ID)
+        val channelId = when (priority) { 1 -> CHANNEL_P1; 2 -> CHANNEL_P2; 3 -> CHANNEL_P3; else -> CHANNEL_DEFAULT }
+        val notifPriority = when (priority) { 1 -> NotificationCompat.PRIORITY_MAX; 2 -> NotificationCompat.PRIORITY_HIGH; 3 -> NotificationCompat.PRIORITY_DEFAULT; else -> NotificationCompat.PRIORITY_LOW }
+
+        val priorityEmoji = when (priority) { 1 -> "🔴"; 2 -> "🟠"; 3 -> "🔵"; else -> "" }
+        val priorityTag = when (priority) { 1 -> "URGENT"; 2 -> "MEDIUM"; 3 -> "LOW"; else -> "" }
+
+        val title = buildString {
+            if (priorityEmoji.isNotEmpty()) append("$priorityEmoji ")
+            append(taskText)
+        }
+
+        val bigText = buildString {
+            append(dueLabel)
+            if (priorityTag.isNotEmpty()) append("\nPriority: $priorityTag")
+        }
+
+        val builder = NotificationCompat.Builder(context, channelId)
             .setSmallIcon(android.R.drawable.ic_popup_reminder)
-            .setContentTitle(taskText)
+            .setContentTitle(title)
             .setContentText(dueLabel)
-            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+            .setStyle(NotificationCompat.BigTextStyle().bigText(bigText))
+            .setSubText(when (priority) { 1 -> "p1 urgent"; 2 -> "p2 medium"; 3 -> "p3 low"; else -> "memos" })
+            .setWhen(System.currentTimeMillis())
+            .setShowWhen(true)
+            .setPriority(notifPriority)
+            .setCategory(NotificationCompat.CATEGORY_REMINDER)
+            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
             .setAutoCancel(true)
+            .setOnlyAlertOnce(false)
             .setContentIntent(pendingOpen)
-            .build()
+            .setDefaults(NotificationCompat.DEFAULT_LIGHTS)
+            .setGroup("task_reminders_${notificationId}")
+            .setColor(when (priority) { 1 -> 0xFFE51400.toInt(); 2 -> 0xFFF0A30A.toInt(); 3 -> 0xFF1BA1E2.toInt(); else -> 0xFF666666.toInt() })
+
+        when (priority) {
+            1 -> {
+                builder.setFullScreenIntent(pendingOpen, true)
+                builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM))
+                builder.setVibrate(longArrayOf(0, 500, 200, 500, 200, 500))
+            }
+            2 -> {
+                builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
+                builder.setVibrate(longArrayOf(0, 300, 200, 300))
+            }
+            3 -> {
+                builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
+                builder.setVibrate(longArrayOf(0, 200))
+            }
+        }
 
         val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-        manager.notify(notificationId, notification)
+        manager.notify(notificationId, builder.build())
     }
 }

composeApp/src/androidMain/kotlin/com/avinal/memos/util/PlatformNotification.android.kt

@@ -1,8 +1,23 @@
 package com.avinal.memos.util
 
+import com.avinal.memos.notifications.DirectAlarmScheduler
 import com.avinal.memos.notifications.runTaskCheckNow
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+private var liveMemosProvider: (() -> List<com.avinal.memos.domain.Memo>)? = null
+
+actual fun setLiveMemosProvider(provider: () -> List<com.avinal.memos.domain.Memo>) {
+    liveMemosProvider = provider
+}
 
 actual fun triggerReminderCheck() {
     val ctx = appContext ?: return
-    runTaskCheckNow(ctx)
+    val memos = liveMemosProvider?.invoke()
+    if (memos != null && memos.isNotEmpty()) {
+        DirectAlarmScheduler.scheduleFromMemos(ctx, memos)
+    } else {
+        runTaskCheckNow(ctx)
+    }
 }

composeApp/src/commonMain/kotlin/com/avinal/memos/AppDependencies.kt

@@ -12,6 +12,8 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.IO
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import com.avinal.memos.db.entity.toDomain
 
 class AppDependencies(
     dataStorePath: String,
@@ -37,7 +39,11 @@ class AppDependencies(
     }
 
     val authRepository: AuthRepository by lazy { AuthRepository(apiClient, tokenStore) }
-    val memoRepository: MemoRepository by lazy { MemoRepository(apiClient, database.memoDao()) }
+    val memoRepository: MemoRepository by lazy {
+        MemoRepository(apiClient, database.memoDao()) {
+            com.avinal.memos.util.triggerReminderCheck()
+        }
+    }
 
     private var initJob: kotlinx.coroutines.Job? = null
 
@@ -46,6 +52,17 @@ class AppDependencies(
         initJob = CoroutineScope(Dispatchers.IO).launch {
             launch { tokenStore.accessToken.collect { cachedToken = it } }
             launch { tokenStore.serverUrl.collect { cachedServerUrl = it } }
+            launch { tokenStore.syncInterval.collect { memoRepository.syncIntervalMinutes = it } }
+            launch { initializeLiveMemosProvider() }
         }
     }
+
+    private suspend fun initializeLiveMemosProvider() {
+        try {
+            val dao = database.memoDao()
+            com.avinal.memos.util.setLiveMemosProvider {
+                runBlocking { dao.getAll().map { it.toDomain() } }
+            }
+        } catch (_: Exception) {}
+    }
 }

composeApp/src/commonMain/kotlin/com/avinal/memos/domain/MemoRepository.kt

@@ -17,14 +17,16 @@ import kotlinx.coroutines.launch
 class MemoRepository(
     private val apiClient: MemosApiClient,
     private val memoDao: MemoDao,
+    private val onContentChanged: (() -> Unit)? = null,
 ) {
     private var nextPageToken: String = ""
     private var hasMorePages: Boolean = true
     private var lastFetchTime: Long = 0L
+    var syncIntervalMinutes: Int = 5
 
     private fun nowMillis(): Long = Clock.System.now().toEpochMilliseconds()
 
-    private fun isCacheStale(): Boolean = (nowMillis() - lastFetchTime) > CACHE_TTL_MS
+    private fun isCacheStale(): Boolean = (nowMillis() - lastFetchTime) > (syncIntervalMinutes * 60 * 1000L)
 
     fun observeMemos(): Flow<List<Memo>> {
         if (isCacheStale()) {
@@ -101,6 +103,7 @@ class MemoRepository(
             is ApiResult.Success -> {
                 val memo = result.data.toDomain()
                 memoDao.upsert(memo.toEntity(nowMillis()))
+                onContentChanged?.invoke()
                 ApiResult.Success(memo)
             }
             is ApiResult.Error -> result
@@ -123,6 +126,7 @@ class MemoRepository(
             is ApiResult.Success -> {
                 val memo = result.data.toDomain()
                 memoDao.upsert(memo.toEntity(nowMillis()))
+                onContentChanged?.invoke()
                 ApiResult.Success(memo)
             }
             is ApiResult.Error -> result
@@ -196,8 +200,4 @@ class MemoRepository(
         nextPageToken = ""
         hasMorePages = true
     }
-
-    companion object {
-        private const val CACHE_TTL_MS = 5 * 60 * 1000L
-    }
 }

composeApp/src/commonMain/kotlin/com/avinal/memos/notifications/ReminderScheduler.kt

@@ -1,5 +1,6 @@
 package com.avinal.memos.notifications
 
+import com.avinal.memos.domain.ReminderDuration
 import com.avinal.memos.domain.ReminderUnit
 import com.avinal.memos.domain.Task
 import kotlinx.datetime.LocalTime
@@ -13,58 +14,80 @@ data class ScheduledAlarm(
     val taskText: String,
     val label: String,
     val triggerAtMillis: Long,
+    val priority: Int = 0,
 )
 
 object ReminderScheduler {
 
+    /**
+     * Compute alarms for tasks. Logic:
+     * - time only, no date → date = today
+     * - date only, no time → time = [defaultTime] (default 20:00)
+     * - both set → use as-is
+     * - neither → skip (no alarm possible)
+     *
+     * Reminder:
+     * - explicit !duration → alarm at dueDateTime - duration
+     * - no explicit reminder → alarm at dueDateTime itself
+     */
     fun computeAlarms(
         tasks: List<Task>,
         nowMillis: Long,
         timeZone: TimeZone,
-        alreadyScheduledIds: Set<String>,
+        alreadyScheduledIds: Set<String> = emptySet(),
+        defaultTime: LocalTime = LocalTime(20, 0),
     ): List<ScheduledAlarm> {
         val alarms = mutableListOf<ScheduledAlarm>()
-
         val today = kotlin.time.Clock.System.todayIn(timeZone)
 
         tasks.forEach { task ->
             if (task.isCompleted) return@forEach
+
             val effectiveDate = task.dueDate ?: if (task.dueTime != null) today else return@forEach
+            val effectiveTime = task.dueTime ?: defaultTime
+
+            val dueMs = effectiveDate.atTime(effectiveTime).toInstant(timeZone).toEpochMilliseconds()
+
+            println("ReminderScheduler: task=${task.text} effectiveDate=$effectiveDate effectiveTime=$effectiveTime dueMs=$dueMs nowMillis=$nowMillis future=${dueMs > nowMillis}")
 
             // Explicit reminder: fire at dueDateTime - duration
             if (task.reminder != null) {
-                val dueInstant = effectiveDate.atTime(task.dueTime ?: LocalTime(8, 0)).toInstant(timeZone)
-                val offsetMs = when (task.reminder.unit) {
-                    ReminderUnit.MIN -> task.reminder.value * 60_000L
-                    ReminderUnit.HR -> task.reminder.value * 3_600_000L
-                    ReminderUnit.DAY -> task.reminder.value * 86_400_000L
-                    ReminderUnit.WEEK -> task.reminder.value * 604_800_000L
-                }
-                val reminderMs = dueInstant.toEpochMilliseconds() - offsetMs
+                val offsetMs = durationToMillis(task.reminder)
+                val reminderMs = dueMs - offsetMs
                 if (reminderMs > nowMillis) {
-                    alarms.add(ScheduledAlarm("${task.id}_remind", task.text, "reminder: ${task.reminder}", reminderMs))
+                    val label = buildReminderLabel(task, effectiveDate, effectiveTime)
+                    alarms.add(ScheduledAlarm("${task.id}_remind", task.text, label, reminderMs, task.priority ?: 0))
                 }
             }
 
             // Due time alarm
-            if (task.dueTime != null) {
-                val alarmMs = effectiveDate.atTime(task.dueTime).toInstant(timeZone).toEpochMilliseconds()
-                if (alarmMs > nowMillis) {
-                    alarms.add(ScheduledAlarm(task.id, task.text, "due at ${task.dueTime}", alarmMs))
-                }
-            } else {
-                // Default: 8am and 8pm on due date
-                val morning = effectiveDate.atTime(LocalTime(8, 0)).toInstant(timeZone).toEpochMilliseconds()
-                val evening = effectiveDate.atTime(LocalTime(20, 0)).toInstant(timeZone).toEpochMilliseconds()
-                if (morning > nowMillis) {
-                    alarms.add(ScheduledAlarm("${task.id}_am", task.text, "due today", morning))
-                }
-                if (evening > nowMillis) {
-                    alarms.add(ScheduledAlarm("${task.id}_pm", task.text, "reminder: still due today", evening))
-                }
+            if (dueMs > nowMillis) {
+                val label = buildDueLabel(task, effectiveDate, effectiveTime)
+                alarms.add(ScheduledAlarm(task.id, task.text, label, dueMs, task.priority ?: 0))
             }
         }
 
         return alarms
     }
+
+    private fun durationToMillis(d: ReminderDuration): Long = when (d.unit) {
+        ReminderUnit.MIN -> d.value * 60_000L
+        ReminderUnit.HR -> d.value * 3_600_000L
+        ReminderUnit.DAY -> d.value * 86_400_000L
+        ReminderUnit.WEEK -> d.value * 604_800_000L
+    }
+
+    private fun buildReminderLabel(task: Task, date: kotlinx.datetime.LocalDate, time: LocalTime): String {
+        val timeStr = "${time.hour.toString().padStart(2, '0')}:${time.minute.toString().padStart(2, '0')}"
+        val priority = task.priority?.let { " · p$it" } ?: ""
+        val tags = task.lists.joinToString("") { " #$it" }
+        return "Due $date $timeStr$priority$tags"
+    }
+
+    private fun buildDueLabel(task: Task, date: kotlinx.datetime.LocalDate, time: LocalTime): String {
+        val timeStr = "${time.hour.toString().padStart(2, '0')}:${time.minute.toString().padStart(2, '0')}"
+        val priority = task.priority?.let { " · p$it" } ?: ""
+        val tags = task.lists.joinToString("") { " #$it" }
+        return "Now · $date $timeStr$priority$tags"
+    }
 }

composeApp/src/commonMain/kotlin/com/avinal/memos/ui/settings/SettingsScreen.kt

@@ -147,6 +147,14 @@ fun SettingsScreen(
             viewModel.setWeekStartDay((weekStart + 1) % 7)
         }
 
+        val syncInterval by viewModel.syncInterval.collectAsState()
+        SettingToggle("auto sync", "${syncInterval} min", accent, MaterialTheme.colorScheme.onSurfaceVariant) {
+            val options = listOf(1, 2, 5, 10, 15, 30, 60)
+            val idx = options.indexOf(syncInterval)
+            viewModel.setSyncInterval(options[(idx + 1) % options.size])
+        }
+        Text("how often to fetch from server", fontSize = 12.sp, color = MaterialTheme.colorScheme.onSurfaceVariant)
+
         Spacer(Modifier.height(24.dp))
         SectionHeader("notifications")
         Spacer(Modifier.height(6.dp))
@@ -165,6 +173,15 @@ fun SettingsScreen(
             )
         }
         Text("get notified when tasks are due or overdue", fontSize = 12.sp, color = MaterialTheme.colorScheme.onSurfaceVariant)
+
+        val defaultNotifyTime by viewModel.defaultNotifyTime.collectAsState()
+        SettingToggle("default notify time", defaultNotifyTime, accent, MaterialTheme.colorScheme.onSurfaceVariant) {
+            val options = listOf("08:00", "09:00", "12:00", "17:00", "18:00", "20:00", "21:00")
+            val idx = options.indexOf(defaultNotifyTime)
+            viewModel.setDefaultNotifyTime(options[(idx + 1) % options.size])
+        }
+        Text("when a task has a date but no time", fontSize = 12.sp, color = MaterialTheme.colorScheme.onSurfaceVariant)
+
         Text(
             "check reminders now",
             fontSize = 13.sp, color = accent,

composeApp/src/commonMain/kotlin/com/avinal/memos/ui/settings/SettingsViewModel.kt

@@ -45,6 +45,12 @@ class SettingsViewModel(
     val weekStartDay: StateFlow<Int> = tokenStore.weekStartDay
         .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), 0)
 
+    val defaultNotifyTime: StateFlow<String> = tokenStore.defaultNotifyTime
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), "20:00")
+
+    val syncInterval: StateFlow<Int> = tokenStore.syncInterval
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), 5)
+
     init {
         viewModelScope.launch { authRepository.validateToken() }
     }
@@ -73,6 +79,14 @@ class SettingsViewModel(
         viewModelScope.launch { tokenStore.saveWeekStartDay(day) }
     }
 
+    fun setDefaultNotifyTime(time: String) {
+        viewModelScope.launch { tokenStore.saveDefaultNotifyTime(time) }
+    }
+
+    fun setSyncInterval(minutes: Int) {
+        viewModelScope.launch { tokenStore.saveSyncInterval(minutes) }
+    }
+
     fun getExportJson(onResult: (String) -> Unit) {
         viewModelScope.launch {
             val memos = memoRepository.observeMemos().first()

composeApp/src/commonMain/kotlin/com/avinal/memos/util/PlatformNotification.kt

@@ -1,3 +1,4 @@
 package com.avinal.memos.util
 
 expect fun triggerReminderCheck()
+expect fun setLiveMemosProvider(provider: () -> List<com.avinal.memos.domain.Memo>)

composeApp/src/commonMain/kotlin/com/avinal/memos/util/TokenStore.kt

@@ -17,6 +17,8 @@ class TokenStore(private val dataStore: DataStore<Preferences>) {
     val defaultVisibility: Flow<String> = dataStore.data.map { it[KEY_DEFAULT_VIS] ?: "PRIVATE" }
     val defaultReminder: Flow<String> = dataStore.data.map { it[KEY_DEFAULT_REMINDER] ?: "" }
     val weekStartDay: Flow<Int> = dataStore.data.map { (it[KEY_WEEK_START] ?: "0").toIntOrNull() ?: 0 }
+    val defaultNotifyTime: Flow<String> = dataStore.data.map { it[KEY_DEFAULT_NOTIFY_TIME] ?: "20:00" }
+    val syncInterval: Flow<Int> = dataStore.data.map { (it[KEY_SYNC_INTERVAL] ?: "5").toIntOrNull() ?: 5 }
 
     suspend fun saveCredentials(serverUrl: String, token: String) {
         dataStore.edit { prefs ->
@@ -49,6 +51,14 @@ class TokenStore(private val dataStore: DataStore<Preferences>) {
         dataStore.edit { it[KEY_WEEK_START] = day.toString() }
     }
 
+    suspend fun saveDefaultNotifyTime(time: String) {
+        dataStore.edit { it[KEY_DEFAULT_NOTIFY_TIME] = time }
+    }
+
+    suspend fun saveSyncInterval(minutes: Int) {
+        dataStore.edit { it[KEY_SYNC_INTERVAL] = minutes.toString() }
+    }
+
     suspend fun clear() {
         dataStore.edit {
             val theme = it[KEY_THEME]
@@ -68,5 +78,7 @@ class TokenStore(private val dataStore: DataStore<Preferences>) {
         private val KEY_DEFAULT_VIS = stringPreferencesKey("default_visibility")
         private val KEY_DEFAULT_REMINDER = stringPreferencesKey("default_reminder")
         private val KEY_WEEK_START = stringPreferencesKey("week_start_day")
+        private val KEY_DEFAULT_NOTIFY_TIME = stringPreferencesKey("default_notify_time")
+        private val KEY_SYNC_INTERVAL = stringPreferencesKey("sync_interval")
     }
 }

composeApp/src/commonTest/kotlin/com/avinal/memos/ReminderSchedulerTest.kt

@@ -17,183 +17,120 @@ class ReminderSchedulerTest {
 
     private val tz = TimeZone.UTC
     private val dueDate = LocalDate(2026, 6, 15)
-    // nowMillis = 2026-06-15 00:00 UTC
     private val nowMillis = dueDate.atTime(LocalTime(0, 0)).toInstant(tz).toEpochMilliseconds()
+    private val defaultTime = LocalTime(20, 0)
 
     private fun task(
-        id: String = "t1",
-        completed: Boolean = false,
-        date: LocalDate? = dueDate,
-        time: LocalTime? = null,
-        reminder: ReminderDuration? = null,
-        priority: Int? = null,
-    ) = Task(
-        id = id, memoId = "m1", lineIndex = 0, text = "Test",
+        id: String = "t1", completed: Boolean = false,
+        date: LocalDate? = dueDate, time: LocalTime? = null,
+        reminder: ReminderDuration? = null, priority: Int? = null,
+    ) = Task(id = id, memoId = "m1", lineIndex = 0, text = "Test",
         isCompleted = completed, dueDate = date, dueTime = time,
-        reminder = reminder, priority = priority,
-    )
+        reminder = reminder, priority = priority)
 
-    @Test
-    fun completedTaskProducesNoAlarms() {
-        val alarms = ReminderScheduler.computeAlarms(listOf(task(completed = true)), nowMillis, tz, emptySet())
-        assertTrue(alarms.isEmpty())
-    }
+    private fun compute(tasks: List<Task>, now: Long = nowMillis) =
+        ReminderScheduler.computeAlarms(tasks, now, tz, emptySet(), defaultTime)
 
-    @Test
-    fun taskWithNoDateProducesNoAlarms() {
-        val alarms = ReminderScheduler.computeAlarms(listOf(task(date = null)), nowMillis, tz, emptySet())
-        assertTrue(alarms.isEmpty())
-    }
+    @Test fun completedNoAlarms() { assertTrue(compute(listOf(task(completed = true))).isEmpty()) }
+    @Test fun noDateNoTimeNoAlarms() { assertTrue(compute(listOf(task(date = null, time = null))).isEmpty()) }
 
-    @Test
-    fun alreadyScheduledTaskStillRecomputed() {
-        // Alarms are always recomputed — AlarmManager deduplicates via PendingIntent
-        val alarms = ReminderScheduler.computeAlarms(listOf(task()), nowMillis, tz, setOf("t1"))
-        assertTrue(alarms.isNotEmpty())
-    }
-
-    @Test
-    fun taskWithDueTimeProducesOneAlarm() {
-        val t = task(time = LocalTime(15, 0))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
+    @Test fun dateOnlyUsesDefaultTime() {
+        val alarms = compute(listOf(task()))
         assertEquals(1, alarms.size)
-        assertEquals("t1", alarms[0].taskId)
-        assertTrue(alarms[0].label.contains("due at"))
-    }
-
-    @Test
-    fun taskWithDueTimeAlarmAtCorrectTime() {
-        val t = task(time = LocalTime(15, 0))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
-        val expected = dueDate.atTime(LocalTime(15, 0)).toInstant(tz).toEpochMilliseconds()
+        val expected = dueDate.atTime(defaultTime).toInstant(tz).toEpochMilliseconds()
         assertEquals(expected, alarms[0].triggerAtMillis)
     }
 
-    @Test
-    fun taskWithoutTimeProducesTwoAlarms() {
-        val alarms = ReminderScheduler.computeAlarms(listOf(task()), nowMillis, tz, emptySet())
-        assertEquals(2, alarms.size)
-        assertTrue(alarms.any { it.taskId == "t1_am" })
-        assertTrue(alarms.any { it.taskId == "t1_pm" })
+    @Test fun dateAndTimeUsesExactTime() {
+        val alarms = compute(listOf(task(time = LocalTime(15, 0))))
+        assertEquals(1, alarms.size)
+        assertEquals(dueDate.atTime(LocalTime(15, 0)).toInstant(tz).toEpochMilliseconds(), alarms[0].triggerAtMillis)
     }
 
-    @Test
-    fun defaultAlarmsAt8amAnd8pm() {
-        val alarms = ReminderScheduler.computeAlarms(listOf(task()), nowMillis, tz, emptySet())
-        val am = alarms.first { it.taskId == "t1_am" }
-        val pm = alarms.first { it.taskId == "t1_pm" }
-        val expected8am = dueDate.atTime(LocalTime(8, 0)).toInstant(tz).toEpochMilliseconds()
-        val expected8pm = dueDate.atTime(LocalTime(20, 0)).toInstant(tz).toEpochMilliseconds()
-        assertEquals(expected8am, am.triggerAtMillis)
-        assertEquals(expected8pm, pm.triggerAtMillis)
-    }
-
-    @Test
-    fun reminderDurationOffset30min() {
+    @Test fun reminderOffset30min() {
         val t = task(time = LocalTime(15, 0), reminder = ReminderDuration(30, ReminderUnit.MIN))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
+        val alarms = compute(listOf(t))
+        assertEquals(2, alarms.size)
         val reminder = alarms.first { it.taskId.endsWith("_remind") }
         val expected = dueDate.atTime(LocalTime(15, 0)).toInstant(tz).toEpochMilliseconds() - 30 * 60_000L
         assertEquals(expected, reminder.triggerAtMillis)
     }
 
-    @Test
-    fun reminderDurationOffset1hr() {
+    @Test fun reminderOffset1hr() {
         val t = task(time = LocalTime(10, 0), reminder = ReminderDuration(1, ReminderUnit.HR))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
-        val reminder = alarms.first { it.taskId.endsWith("_remind") }
-        val expected = dueDate.atTime(LocalTime(10, 0)).toInstant(tz).toEpochMilliseconds() - 3_600_000L
-        assertEquals(expected, reminder.triggerAtMillis)
+        val reminder = compute(listOf(t)).first { it.taskId.endsWith("_remind") }
+        assertEquals(dueDate.atTime(LocalTime(10, 0)).toInstant(tz).toEpochMilliseconds() - 3_600_000L, reminder.triggerAtMillis)
     }
 
-    @Test
-    fun reminderDurationOffset1day() {
+    @Test fun reminderOffset1day() {
         val t = task(reminder = ReminderDuration(1, ReminderUnit.DAY))
-        // Set now to 2 days before due date so the 1-day reminder is in the future
         val earlyNow = dueDate.atTime(LocalTime(0, 0)).toInstant(tz).toEpochMilliseconds() - 2 * 86_400_000L
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), earlyNow, tz, emptySet())
-        val reminder = alarms.first { it.taskId.endsWith("_remind") }
-        val expected = dueDate.atTime(LocalTime(8, 0)).toInstant(tz).toEpochMilliseconds() - 86_400_000L
-        assertEquals(expected, reminder.triggerAtMillis)
+        val reminder = compute(listOf(t), earlyNow).first { it.taskId.endsWith("_remind") }
+        assertEquals(dueDate.atTime(defaultTime).toInstant(tz).toEpochMilliseconds() - 86_400_000L, reminder.triggerAtMillis)
     }
 
-    @Test
-    fun reminderDurationOffset1week() {
+    @Test fun reminderOffset1week() {
         val t = task(reminder = ReminderDuration(1, ReminderUnit.WEEK))
         val earlyNow = dueDate.atTime(LocalTime(0, 0)).toInstant(tz).toEpochMilliseconds() - 8 * 86_400_000L
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), earlyNow, tz, emptySet())
-        val reminder = alarms.first { it.taskId.endsWith("_remind") }
-        val expected = dueDate.atTime(LocalTime(8, 0)).toInstant(tz).toEpochMilliseconds() - 604_800_000L
-        assertEquals(expected, reminder.triggerAtMillis)
+        val reminder = compute(listOf(t), earlyNow).first { it.taskId.endsWith("_remind") }
+        assertEquals(dueDate.atTime(defaultTime).toInstant(tz).toEpochMilliseconds() - 604_800_000L, reminder.triggerAtMillis)
     }
 
-    @Test
-    fun reminderWithDueTimeProducesBothAlarms() {
+    @Test fun reminderAndDueTimeBothFire() {
         val t = task(time = LocalTime(14, 0), reminder = ReminderDuration(30, ReminderUnit.MIN))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
-        // Should have: reminder alarm + due time alarm
+        val alarms = compute(listOf(t))
         assertEquals(2, alarms.size)
         assertTrue(alarms.any { it.taskId.endsWith("_remind") })
         assertTrue(alarms.any { it.taskId == "t1" })
     }
 
-    @Test
-    fun pastAlarmsNotScheduled() {
-        // now is after the due time
+    @Test fun pastAlarmsNotScheduled() {
         val lateNow = dueDate.atTime(LocalTime(23, 0)).toInstant(tz).toEpochMilliseconds()
-        val t = task(time = LocalTime(10, 0))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), lateNow, tz, emptySet())
-        assertTrue(alarms.isEmpty())
+        assertTrue(compute(listOf(task(time = LocalTime(10, 0))), lateNow).isEmpty())
     }
 
-    @Test
-    fun pastReminderNotScheduledButDueTimeStillIs() {
-        // now is after the reminder time but before due time
+    @Test fun pastReminderButFutureDue() {
         val t = task(time = LocalTime(15, 0), reminder = ReminderDuration(2, ReminderUnit.HR))
         val midNow = dueDate.atTime(LocalTime(14, 0)).toInstant(tz).toEpochMilliseconds()
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), midNow, tz, emptySet())
-        // Reminder at 13:00 is past, due at 15:00 is future
+        val alarms = compute(listOf(t), midNow)
         assertEquals(1, alarms.size)
         assertEquals("t1", alarms[0].taskId)
     }
 
-    @Test
-    fun multipleTasksProduceCorrectAlarms() {
+    @Test fun multipleTasks() {
         val tasks = listOf(
             task(id = "a", time = LocalTime(9, 0)),
             task(id = "b", time = LocalTime(17, 0)),
             task(id = "c", completed = true),
             task(id = "d", date = null),
         )
-        val alarms = ReminderScheduler.computeAlarms(tasks, nowMillis, tz, emptySet())
-        assertEquals(2, alarms.size)
-        assertTrue(alarms.any { it.taskId == "a" })
-        assertTrue(alarms.any { it.taskId == "b" })
+        assertEquals(2, compute(tasks).size)
     }
 
-    @Test
-    fun alarmLabelsCorrect() {
+    @Test fun dueLabelIncludesPriorityAndTags() {
+        val t = task(time = LocalTime(14, 0), priority = 1).copy(lists = listOf("work"))
+        val alarm = compute(listOf(t)).first { it.taskId == "t1" }
+        assertTrue(alarm.label.contains("p1"))
+        assertTrue(alarm.label.contains("#work"))
+    }
+
+    @Test fun reminderLabelIncludesDateAndTime() {
         val t = task(time = LocalTime(14, 0), reminder = ReminderDuration(30, ReminderUnit.MIN))
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
-        val reminder = alarms.first { it.taskId.endsWith("_remind") }
-        assertTrue(reminder.label.contains("reminder"))
-        val due = alarms.first { it.taskId == "t1" }
-        assertTrue(due.label.contains("due at"))
+        val alarm = compute(listOf(t)).first { it.taskId.endsWith("_remind") }
+        assertTrue(alarm.label.contains("Due"))
+        assertTrue(alarm.label.contains("14:00"))
     }
 
-    @Test
-    fun defaultAlarmLabelsCorrect() {
-        val alarms = ReminderScheduler.computeAlarms(listOf(task()), nowMillis, tz, emptySet())
-        val am = alarms.first { it.taskId == "t1_am" }
-        val pm = alarms.first { it.taskId == "t1_pm" }
-        assertEquals("due today", am.label)
-        assertTrue(pm.label.contains("still due"))
-    }
-
-    @Test
-    fun taskTextPreservedInAlarm() {
+    @Test fun taskTextPreserved() {
         val t = task().copy(text = "Buy groceries")
-        val alarms = ReminderScheduler.computeAlarms(listOf(t), nowMillis, tz, emptySet())
-        assertTrue(alarms.all { it.taskText == "Buy groceries" })
+        assertTrue(compute(listOf(t)).all { it.taskText == "Buy groceries" })
+    }
+
+    @Test fun customDefaultTime() {
+        val alarms = ReminderScheduler.computeAlarms(
+            listOf(task()), nowMillis, tz, emptySet(), LocalTime(9, 0)
+        )
+        val expected = dueDate.atTime(LocalTime(9, 0)).toInstant(tz).toEpochMilliseconds()
+        assertEquals(expected, alarms[0].triggerAtMillis)
     }
 }

composeApp/src/iosMain/kotlin/com/avinal/memos/util/PlatformNotification.ios.kt

@@ -1,5 +1,4 @@
 package com.avinal.memos.util
 
-actual fun triggerReminderCheck() {
-    // TODO: iOS notification check
-}
+actual fun triggerReminderCheck() {}
+actual fun setLiveMemosProvider(provider: () -> List<com.avinal.memos.domain.Memo>) {}