diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 59be133..c9ace20 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -8,6 +8,8 @@
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
 
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
@@ -54,5 +56,20 @@
                 <action android:name="com.lyokone.location.BackgroundLocationBroadcastReceiver.ACTION_PROCESS_UPDATES" />
             </intent-filter>
         </receiver>
+
+        <service
+            android:name="io.flutter.plugins.androidalarmmanager.AlarmService"
+            android:permission="android.permission.BIND_JOB_SERVICE"
+            android:exported="false"/>
+        <receiver
+            android:name="io.flutter.plugins.androidalarmmanager.AlarmBroadcastReceiver"
+            android:exported="false"/>
+        <receiver
+            android:name="io.flutter.plugins.androidalarmmanager.RebootBroadcastReceiver"
+            android:enabled="false">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED"></action>
+            </intent-filter>
+        </receiver>
     </application>
 </manifest>
diff --git a/android/app/src/main/java/com/keyboardcrumbs/hassclient/Application.java b/android/app/src/main/java/com/keyboardcrumbs/hassclient/Application.java
index d77e627..e7aef4a 100644
--- a/android/app/src/main/java/com/keyboardcrumbs/hassclient/Application.java
+++ b/android/app/src/main/java/com/keyboardcrumbs/hassclient/Application.java
@@ -4,6 +4,7 @@ import io.flutter.app.FlutterApplication;
 import io.flutter.plugin.common.PluginRegistry;
 import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback;
 import io.flutter.plugins.GeneratedPluginRegistrant;
+import io.flutter.plugins.androidalarmmanager.AlarmService;
 import com.lyokone.location.LocationPlugin;
 
 public class Application extends FlutterApplication implements PluginRegistrantCallback {
@@ -11,6 +12,7 @@ public class Application extends FlutterApplication implements PluginRegistrantC
     public void onCreate() {
         super.onCreate();
         LocationPlugin.setPluginRegistrant(this);
+        AlarmService.setPluginRegistrant(this);
     }
 
     @Override
diff --git a/lib/main.dart b/lib/main.dart
index c9c37e0..372643f 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -24,9 +24,9 @@ import 'package:device_info/device_info.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:in_app_purchase/in_app_purchase.dart';
 import 'package:location/location.dart';
+import 'package:android_alarm_manager/android_alarm_manager.dart';
 
 part 'const.dart';
-part 'premium_features_manager.class.dart';
 part 'entities/entity.class.dart';
 part 'entities/entity_wrapper.class.dart';
 part 'entities/timer/timer_entity.class.dart';
@@ -100,7 +100,8 @@ part 'pages/entity.page.dart';
 part 'utils.class.dart';
 part 'mdi.class.dart';
 part 'entity_collection.class.dart';
-part 'auth_manager.class.dart';
+part 'managers/auth_manager.class.dart';
+part 'managers/location_manager.class.dart';
 part 'connection.class.dart';
 part 'device.class.dart';
 part 'ui_class/ui.dart';
@@ -129,9 +130,10 @@ void main() async {
   };
 
   runZoned(() {
-
-    runApp(new HAClientApp());
-    print("Running MAIN isolate ${Isolate.current.hashCode}");
+    AndroidAlarmManager.initialize().then((_) {
+      runApp(new HAClientApp());
+      print("Running MAIN isolate ${Isolate.current.hashCode}");
+    });
 
   }, onError: (error, stack) {
     Logger.e("$error");
@@ -283,7 +285,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
     _showInfoBottomBar(progress: true,);
     _subscribe().then((_) {
       Connection().init(loadSettings: true, forceReconnect: true).then((__){
-        PremiumFeaturesManager();
+        LocationManager();
         _fetchData();
       }, onError: (e) {
         _setErrorState(e);
@@ -331,7 +333,6 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
   void _handlePurchaseUpdates(purchase) {
     if (purchase is List<PurchaseDetails>) {
       if (purchase[0].status == PurchaseStatus.purchased) {
-        PremiumFeaturesManager().addPurchase(purchase[0]);
         eventBus.fire(ShowPopupMessageEvent(
             title: "Thanks a lot!",
             body: "Thank you for supporting HA Client development!",
diff --git a/lib/auth_manager.class.dart b/lib/managers/auth_manager.class.dart
similarity index 98%
rename from lib/auth_manager.class.dart
rename to lib/managers/auth_manager.class.dart
index b85a561..d54109a 100644
--- a/lib/auth_manager.class.dart
+++ b/lib/managers/auth_manager.class.dart
@@ -1,4 +1,4 @@
-part of 'main.dart';
+part of '../main.dart';
 
 class AuthManager {
 
diff --git a/lib/managers/location_manager.class.dart b/lib/managers/location_manager.class.dart
new file mode 100644
index 0000000..a321c8c
--- /dev/null
+++ b/lib/managers/location_manager.class.dart
@@ -0,0 +1,117 @@
+part of '../main.dart';
+
+class LocationManager {
+
+  static void updateDeviceLocation(List<LocationData> locations) {
+    print("[GPS isolate #${Isolate.current.hashCode}] Got device location update");
+    SharedPreferences.getInstance().then((prefs){
+      print("[GPS isolate #${Isolate.current.hashCode}] loading settings");
+      String webhookId = prefs.getString('app-webhook-id');
+      String domain = prefs.getString('hassio-domain');
+      String port = prefs.getString('hassio-port');
+      String httpWebHost =
+          "${prefs.getString('hassio-res-protocol')}://$domain:$port";
+      if (webhookId != null && webhookId.isNotEmpty) {
+        int battery = DateTime.now().hour;
+        try {
+          print("[GPS isolate #${Isolate.current.hashCode}] Sending data home...");
+          String url = "$httpWebHost/api/webhook/$webhookId";
+          Map<String, String> headers = {};
+          headers["Content-Type"] = "application/json";
+          var data = {
+            "type": "update_location",
+            "data": {
+              "gps": [locations[0].latitude, locations[0].longitude],
+              "gps_accuracy": locations[0].accuracy,
+              "battery": battery
+            }
+          };
+          http.post(
+              url,
+              headers: headers,
+              body: json.encode(data)
+          );
+        } on PlatformException catch (e) {
+          if (e.code == 'PERMISSION_DENIED') {
+            print("[GPS isolate #${Isolate.current.hashCode}] No location permission. Aborting");
+          }
+        }
+      } else {
+        print("[GPS isolate #${Isolate.current.hashCode}] No webhook id. Aborting");
+      }
+    });
+  }
+
+  static void updateTestEntity() {
+    print("[Test isolate #${Isolate.current.hashCode}] alarm service callback");
+    SharedPreferences.getInstance().then((prefs){
+      print("[Test isolate #${Isolate.current.hashCode}] loading settings");
+      String webhookId = prefs.getString('app-webhook-id');
+      String domain = prefs.getString('hassio-domain');
+      String port = prefs.getString('hassio-port');
+      String httpWebHost =
+          "${prefs.getString('hassio-res-protocol')}://$domain:$port";
+      if (webhookId != null && webhookId.isNotEmpty) {
+        DateTime currentTime = DateTime.now();
+        String timeData = "${currentTime.year}-${currentTime.month}-${currentTime.day} ${currentTime.hour}:${currentTime.minute}";
+        try {
+          print("[Test isolate #${Isolate.current.hashCode}] Sending data home...");
+          String url = "$httpWebHost/api/webhook/$webhookId";
+          Map<String, String> headers = {};
+          headers["Content-Type"] = "application/json";
+          var data = {
+            "type": "call_service",
+            "data": {
+              "domain": "input_datetime",
+              "service": "set_datetime",
+              "service_data": {
+                "entity_id": "input_datetime.app_alarm_service_test",
+                "datetime": timeData
+              }
+            }
+          };
+          http.post(
+              url,
+              headers: headers,
+              body: json.encode(data)
+          );
+        } catch (e) {
+          print("[Test isolate #${Isolate.current.hashCode}] Error: ${e.toString()}");
+        }
+      } else {
+        print("[Test isolate #${Isolate.current.hashCode}] No webhook id. Aborting");
+      }
+    });
+  }
+
+  static final LocationManager _instance = LocationManager
+      ._internal();
+
+  factory LocationManager() {
+    return _instance;
+  }
+
+  LocationManager._internal() {
+    _registerLocationListener();
+  }
+
+  final int alarmId = 349011;
+  final Duration testAlarmUpdateInterval = Duration(minutes: 10);
+
+  void _registerLocationListener() async {
+    var _locationService = Location();
+    bool _permission = await _locationService.requestPermission();
+    if (_permission) {
+      Logger.d("Activating device location tracking");
+      _locationService.changeSettings(interval: 10000, accuracy: LocationAccuracy.BALANCED);
+      bool statusBackgroundLocation = await _locationService.registerBackgroundLocation(LocationManager.updateDeviceLocation);
+      Logger.d("Location listener status: $statusBackgroundLocation");
+    } else {
+      Logger.e("Location permission not granted");
+    }
+    //await AndroidAlarmManager.cancel(alarmId);
+    Logger.d("Activating alarm service test");
+    await AndroidAlarmManager.periodic(testAlarmUpdateInterval, alarmId, LocationManager.updateTestEntity);
+  }
+
+}
\ No newline at end of file
diff --git a/lib/pages/purchase.page.dart b/lib/pages/purchase.page.dart
index 8b0d7d1..3138dd9 100644
--- a/lib/pages/purchase.page.dart
+++ b/lib/pages/purchase.page.dart
@@ -13,26 +13,63 @@ class _PurchasePageState extends State<PurchasePage> {
 
   bool _loaded = false;
   String _error = "";
-
+  List<ProductDetails> _products;
+  List<PurchaseDetails> _purchases;
 
   @override
   void initState() {
     super.initState();
-    if (PremiumFeaturesManager().products.isEmpty) {
-      _error = "Subscription is not loaded";
+    _loadProducts();
+  }
+
+  _loadProducts() async {
+    final bool available = await InAppPurchaseConnection.instance.isAvailable();
+    if (!available) {
+      setState(() {
+        _error = "Error connecting to store";
+      });
     } else {
-      _loaded = true;
+      const Set<String> _kIds = {'one_time_support','just_few_bucks_per_year', 'app_fan_support_per_year', 'grateful_user_support_per_year'};
+      final ProductDetailsResponse response = await InAppPurchaseConnection.instance.queryProductDetails(_kIds);
+      if (!response.notFoundIDs.isEmpty) {
+        Logger.d("Products not found: ${response.notFoundIDs}");
+      }
+      _products = response.productDetails;
+      _loadPreviousPurchases();
+    }
+  }
+
+  _loadPreviousPurchases() async {
+    final QueryPurchaseDetailsResponse response = await InAppPurchaseConnection.instance.queryPastPurchases();
+    if (response.error != null) {
+      setState(() {
+        _error = "Error loading previous purchases";
+      });
+    } else {
+      _purchases = response.pastPurchases;
+      for (PurchaseDetails purchase in _purchases) {
+        Logger.d("Previous purchase: ${purchase.status}");
+      }
+      if (_products.isEmpty) {
+        setState(() {
+          _error = "No data found in store";
+        });
+      } else {
+        setState(() {
+          _loaded = true;
+        });
+      }
     }
   }
 
   Widget _buildProducts() {
     List<Widget> productWidgets = [];
-    for (ProductDetails product in PremiumFeaturesManager().products) {
+    for (ProductDetails product in _products) {
       productWidgets.add(
         ProductPurchase(
           product: product,
           onBuy: (product) => _buyProduct(product),
-          purchased: PremiumFeaturesManager().purchases.any((purchase) { return purchase.productID == product.id;}),)
+          purchased: _purchases.any((purchase) { return purchase.productID == product.id;}),)
       );
     }
     return ListView(
diff --git a/lib/pages/widgets/product_purchase.widget.dart b/lib/pages/widgets/product_purchase.widget.dart
index 1317a7b..692e03f 100644
--- a/lib/pages/widgets/product_purchase.widget.dart
+++ b/lib/pages/widgets/product_purchase.widget.dart
@@ -10,13 +10,19 @@ class ProductPurchase extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    String period = "/ ";
+    String period = "";
     Color priceColor;
+    String buttonText = '';
+    String buttonTextInactive = '';
     if (product.id.contains("year")) {
-      period += "year";
+      period += "/ year";
+      buttonText = "Subscribe";
+      buttonTextInactive = "Already";
       priceColor = Colors.amber;
     } else {
-      period += "month";
+      period += "";
+      buttonText = "Pay";
+      buttonTextInactive = "Paid";
       priceColor = Colors.deepOrangeAccent;
     }
     return Card(
@@ -55,7 +61,7 @@ class ProductPurchase extends StatelessWidget {
               Expanded(
                 flex: 2,
                 child: RaisedButton(
-                  child: Text(this.purchased ? "Bought" : "Buy", style: TextStyle(color: Colors.white)),
+                  child: Text(this.purchased ? buttonTextInactive : buttonText, style: TextStyle(color: Colors.white)),
                   color: Colors.blue,
                   onPressed: this.purchased ? null : () => this.onBuy(this.product),
                 ),
diff --git a/pubspec.lock b/pubspec.lock
index c51d396..8526946 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,6 +1,13 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  android_alarm_manager:
+    dependency: "direct main"
+    description:
+      name: android_alarm_manager
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.4"
   archive:
     dependency: transitive
     description:
@@ -49,14 +56,14 @@ packages:
       name: charts_common
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.7.0"
+    version: "0.8.0"
   charts_flutter:
     dependency: "direct main"
     description:
       name: charts_flutter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.7.0"
+    version: "0.8.0"
   collection:
     dependency: transitive
     description:
@@ -192,7 +199,7 @@ packages:
       name: in_app_purchase
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1"
+    version: "0.2.1+2"
   intl:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index a2cdb7e..a206a04 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -26,6 +26,7 @@ dependencies:
   flutter_secure_storage: ^3.2.1+1
   device_info: ^0.4.0+2
   flutter_local_notifications: ^0.8.2
+  android_alarm_manager: ^0.4.4
   location:
     git:
       url: git://github.com/Lyokone/flutterlocation.git