diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..8b4a576
--- /dev/null
+++ b/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,108 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- Exact alarm scheduling (Android 12+) -->
+    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
+    <uses-permission android:name="android.permission.USE_EXACT_ALARM" />
+
+    <!-- Notifications -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <!-- Wake device for alarms -->
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+
+    <!-- Full-screen intent for critical alarms -->
+    <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />
+
+    <!-- Foreground service for active timer display -->
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
+
+    <application
+        android:name=".ChronoMindApp"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="ChronoMind"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.ChronoMind">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:theme="@style/Theme.ChronoMind"
+            android:showOnLockScreen="true"
+            android:turnScreenOn="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <!-- Universal Links for shared timers -->
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="chronomind.app" android:pathPrefix="/t/" />
+                <data android:scheme="https" android:host="chronomind.app" android:pathPrefix="/ref/" />
+            </intent-filter>
+        </activity>
+
+        <!-- Alarm Receiver -->
+        <receiver
+            android:name=".notifications.TimerAlarmReceiver"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.chronomind.ACTION_SNOOZE" />
+                <action android:name="com.chronomind.ACTION_DISMISS" />
+            </intent-filter>
+        </receiver>
+
+        <!-- Boot Receiver — reschedule alarms after reboot -->
+        <receiver
+            android:name=".notifications.BootReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
+        <!-- Widgets -->
+        <receiver
+            android:name=".widget.TimerWidgetSmallReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_small_info" />
+        </receiver>
+
+        <receiver
+            android:name=".widget.TimerWidgetMediumReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_medium_info" />
+        </receiver>
+
+        <receiver
+            android:name=".widget.TimerWidgetLargeReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_large_info" />
+        </receiver>
+
+    </application>
+
+</manifest>
diff --git a/android/app/src/main/java/com/chronomind/app/notifications/BootReceiver.kt b/android/app/src/main/java/com/chronomind/app/notifications/BootReceiver.kt
new file mode 100644
index 0000000..adc8943
--- /dev/null
+++ b/android/app/src/main/java/com/chronomind/app/notifications/BootReceiver.kt
@@ -0,0 +1,16 @@
+package com.chronomind.app.notifications
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+
+class BootReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        if (intent.action == Intent.ACTION_BOOT_COMPLETED) {
+            // Reschedule all active timer alarms after device reboot
+            // In production, load timers from Room DB and reschedule each
+            val manager = TimerNotificationManager(context)
+            manager.createNotificationChannels()
+        }
+    }
+}
diff --git a/android/app/src/main/res/xml/widget_medium_info.xml b/android/app/src/main/res/xml/widget_medium_info.xml
new file mode 100644
index 0000000..ed6c12a
--- /dev/null
+++ b/android/app/src/main/res/xml/widget_medium_info.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:targetCellWidth="4"
+    android:targetCellHeight="2"
+    android:updatePeriodMillis="60000"
+    android:initialLayout="@layout/widget_placeholder"
+    android:resizeMode="horizontal"
+    android:widgetCategory="home_screen"
+    android:description="@string/widget_medium_description" />
diff --git a/android/app/src/main/res/xml/widget_small_info.xml b/android/app/src/main/res/xml/widget_small_info.xml
new file mode 100644
index 0000000..f4c8ff3
--- /dev/null
+++ b/android/app/src/main/res/xml/widget_small_info.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:minWidth="110dp"
+    android:minHeight="110dp"
+    android:targetCellWidth="2"
+    android:targetCellHeight="2"
+    android:updatePeriodMillis="60000"
+    android:initialLayout="@layout/widget_placeholder"
+    android:resizeMode="none"
+    android:widgetCategory="home_screen"
+    android:description="@string/widget_small_description" />