diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
new file mode 100644
index 0000000..0bce152
--- /dev/null
+++ b/android/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# ChronoMind ProGuard Rules
+
+# Keep Hilt generated classes
+-keep class dagger.hilt.** { *; }
+-keep class javax.inject.** { *; }
+-keep class * extends dagger.hilt.android.internal.managers.ViewComponentManager$FragmentContextWrapper { *; }
+
+# Keep Kotlin serialization
+-keepattributes *Annotation*, InnerClasses
+-dontnote kotlinx.serialization.AnnotationsKt
+-keepclassmembers class kotlinx.serialization.json.** { *** Companion; }
+-keepclasseswithmembers class kotlinx.serialization.json.** { kotlinx.serialization.KSerializer serializer(...); }
+-keep,includedescriptorclasses class com.chronomind.app.**$$serializer { *; }
+-keepclassmembers class com.chronomind.app.** { *** Companion; }
+-keepclasseswithmembers class com.chronomind.app.** { kotlinx.serialization.KSerializer serializer(...); }
+
+# Keep Glance widget receivers
+-keep class com.chronomind.app.widget.** { *; }
+
+# Keep notification receivers
+-keep class com.chronomind.app.notifications.** { *; }
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 8b4a576..986f0d6 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -69,6 +69,24 @@
             </intent-filter>
         </receiver>
 
+        <!-- Foreground Service for active timer display -->
+        <service
+            android:name=".service.TimerForegroundService"
+            android:exported="false"
+            android:foregroundServiceType="specialUse" />
+
+        <!-- Quick Settings Tile -->
+        <service
+            android:name=".service.QuickTimerTileService"
+            android:exported="true"
+            android:icon="@android:drawable/ic_lock_idle_alarm"
+            android:label="Quick Timer"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+        </service>
+
         <!-- Widgets -->
         <receiver
             android:name=".widget.TimerWidgetSmallReceiver"
diff --git a/android/app/src/main/java/com/chronomind/app/service/QuickTimerTileService.kt b/android/app/src/main/java/com/chronomind/app/service/QuickTimerTileService.kt
new file mode 100644
index 0000000..312de05
--- /dev/null
+++ b/android/app/src/main/java/com/chronomind/app/service/QuickTimerTileService.kt
@@ -0,0 +1,27 @@
+package com.chronomind.app.service
+
+import android.content.Intent
+import android.service.quicksettings.TileService
+import com.chronomind.app.MainActivity
+
+class QuickTimerTileService : TileService() {
+
+    override fun onClick() {
+        super.onClick()
+        // Open app to create timer screen
+        val intent = Intent(this, MainActivity::class.java).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TOP
+            putExtra("action", "quick_timer")
+        }
+        startActivityAndCollapse(intent)
+    }
+
+    override fun onStartListening() {
+        super.onStartListening()
+        qsTile?.let { tile ->
+            tile.label = "Quick Timer"
+            tile.subtitle = "Create timer"
+            tile.updateTile()
+        }
+    }
+}
diff --git a/android/app/src/main/java/com/chronomind/app/service/TimerForegroundService.kt b/android/app/src/main/java/com/chronomind/app/service/TimerForegroundService.kt
new file mode 100644
index 0000000..084c6e9
--- /dev/null
+++ b/android/app/src/main/java/com/chronomind/app/service/TimerForegroundService.kt
@@ -0,0 +1,96 @@
+package com.chronomind.app.service
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import androidx.core.app.NotificationCompat
+import com.chronomind.app.MainActivity
+
+class TimerForegroundService : Service() {
+
+    companion object {
+        const val CHANNEL_ID = "chronomind_foreground"
+        const val NOTIFICATION_ID = 9999
+        const val EXTRA_TIMER_LABEL = "timer_label"
+        const val EXTRA_TIMER_REMAINING = "timer_remaining"
+        const val ACTION_STOP = "com.chronomind.STOP_FOREGROUND"
+
+        fun start(context: Context, label: String, remainingFormatted: String) {
+            val intent = Intent(context, TimerForegroundService::class.java).apply {
+                putExtra(EXTRA_TIMER_LABEL, label)
+                putExtra(EXTRA_TIMER_REMAINING, remainingFormatted)
+            }
+            context.startForegroundService(intent)
+        }
+
+        fun stop(context: Context) {
+            context.stopService(Intent(context, TimerForegroundService::class.java))
+        }
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        createChannel()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        if (intent?.action == ACTION_STOP) {
+            stopForeground(STOP_FOREGROUND_REMOVE)
+            stopSelf()
+            return START_NOT_STICKY
+        }
+
+        val label = intent?.getStringExtra(EXTRA_TIMER_LABEL) ?: "Timer"
+        val remaining = intent?.getStringExtra(EXTRA_TIMER_REMAINING) ?: "--:--"
+
+        val notification = buildNotification(label, remaining)
+        startForeground(NOTIFICATION_ID, notification)
+
+        return START_STICKY
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    private fun createChannel() {
+        val channel = NotificationChannel(
+            CHANNEL_ID,
+            "Active Timer",
+            NotificationManager.IMPORTANCE_LOW
+        ).apply {
+            description = "Shows countdown for the active timer"
+            setShowBadge(false)
+        }
+        val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        manager.createNotificationChannel(channel)
+    }
+
+    private fun buildNotification(label: String, remaining: String): Notification {
+        val openIntent = PendingIntent.getActivity(
+            this, 0,
+            Intent(this, MainActivity::class.java),
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+
+        val stopIntent = PendingIntent.getService(
+            this, 1,
+            Intent(this, TimerForegroundService::class.java).apply { action = ACTION_STOP },
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+
+        return NotificationCompat.Builder(this, CHANNEL_ID)
+            .setSmallIcon(android.R.drawable.ic_lock_idle_alarm)
+            .setContentTitle(label)
+            .setContentText(remaining)
+            .setOngoing(true)
+            .setSilent(true)
+            .setContentIntent(openIntent)
+            .addAction(android.R.drawable.ic_menu_close_clear_cancel, "Stop", stopIntent)
+            .setCategory(NotificationCompat.CATEGORY_SERVICE)
+            .build()
+    }
+}