diff --git a/mobile/lib/src/app.dart b/mobile/lib/src/app.dart
index f5a40f5f..b53ce123 100644
--- a/mobile/lib/src/app.dart
+++ b/mobile/lib/src/app.dart
@@ -1,6 +1,7 @@
 import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'database.dart';
 
 import 'locator.dart';
 import 'presentation/navigation/routes/router.gr.dart' as auto_router;
@@ -8,6 +9,11 @@ import 'theme.dart';
 
 class App extends StatelessWidget {
   App() {
+    init();
+  }
+
+  void init() async {
+    await initDatabase();
     registerServices();
   }
 
diff --git a/mobile/lib/src/application/sleep_sequence_history/sleep_sequence_history_cubit.dart b/mobile/lib/src/application/sleep_sequence_history/sleep_sequence_history_cubit.dart
index e31c5ad8..d8d96d10 100644
--- a/mobile/lib/src/application/sleep_sequence_history/sleep_sequence_history_cubit.dart
+++ b/mobile/lib/src/application/sleep_sequence_history/sleep_sequence_history_cubit.dart
@@ -8,7 +8,7 @@ import 'package:polydodo/src/domain/sleep_sequence/sleep_sequence_stats.dart';
 import 'sleep_sequence_history_state.dart';
 
 class SleepSequenceHistoryCubit extends Cubit<SleepSequenceHistoryState> {
-  final ISleepSequenceRepository _sleepHistoryRepository;
+  final ISleepSequenceRepository _sleepSequenceRepository;
   final SleepSequenceStatsCubit _sleepSequenceStatsCubit;
   final StreamController<String> _selectText =
       StreamController<String>.broadcast();
@@ -16,14 +16,13 @@ class SleepSequenceHistoryCubit extends Cubit<SleepSequenceHistoryState> {
   List<SleepSequenceStats> _selectedSequences;
 
   SleepSequenceHistoryCubit(
-      this._sleepHistoryRepository, this._sleepSequenceStatsCubit)
+      this._sleepSequenceRepository, this._sleepSequenceStatsCubit)
       : super(SleepSequenceHistoryInitial()) {
     loadHistory();
   }
 
   void loadHistory() {
-    emit(SleepSequenceHistoryLoaded(
-        _sleepHistoryRepository.getSleepSequences()));
+    emit(SleepSequenceHistoryLoaded(_sleepSequenceRepository.getAll()));
   }
 
   void loadSleepSequence(SleepSequenceStats sequence) {
@@ -42,14 +41,13 @@ class SleepSequenceHistoryCubit extends Cubit<SleepSequenceHistoryState> {
     _selectedSequences = [];
     _selectText.add('Done');
     emit(SleepSequenceHistoryEditInProgress(
-        _sleepHistoryRepository.getSleepSequences(), _selectedSequences));
+        _sleepSequenceRepository.getAll(), _selectedSequences));
   }
 
   void _disableSelection() {
     _selectedSequences = null;
     _selectText.add('Select');
-    emit(SleepSequenceHistoryLoaded(
-        _sleepHistoryRepository.getSleepSequences()));
+    emit(SleepSequenceHistoryLoaded(_sleepSequenceRepository.getAll()));
   }
 
   void toggleSelectSequenceForDeletion(SleepSequenceStats sequence) {
@@ -60,11 +58,13 @@ class SleepSequenceHistoryCubit extends Cubit<SleepSequenceHistoryState> {
     }
 
     emit(SleepSequenceHistoryEditInProgress(
-        _sleepHistoryRepository.getSleepSequences(), _selectedSequences));
+        _sleepSequenceRepository.getAll(), _selectedSequences));
   }
 
   void deleteSelected() {
-    _sleepHistoryRepository.deleteSleepSequences(_selectedSequences);
+    _sleepSequenceRepository.delete(
+        (state as SleepSequenceHistoryEditInProgress).history,
+        _selectedSequences);
     _disableSelection();
   }
 
diff --git a/mobile/lib/src/database.dart b/mobile/lib/src/database.dart
new file mode 100644
index 00000000..f971c435
--- /dev/null
+++ b/mobile/lib/src/database.dart
@@ -0,0 +1,12 @@
+import 'package:flutter/material.dart';
+import 'package:hive/hive.dart';
+import 'package:hive_flutter/hive_flutter.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:polydodo/src/domain/sleep_sequence/hive_sleep_sequence_stats.dart';
+
+Future<void> initDatabase() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  var appDocDir = await getApplicationDocumentsDirectory();
+  await Hive.initFlutter(appDocDir.path + '/hive');
+  Hive.registerAdapter(HiveSleepSequenceStatsAdapter());
+}
diff --git a/mobile/lib/src/domain/sleep_sequence/hive_sleep_sequence_stats.dart b/mobile/lib/src/domain/sleep_sequence/hive_sleep_sequence_stats.dart
new file mode 100644
index 00000000..75c31d17
--- /dev/null
+++ b/mobile/lib/src/domain/sleep_sequence/hive_sleep_sequence_stats.dart
@@ -0,0 +1,44 @@
+import 'package:hive/hive.dart';
+
+part 'hive_sleep_sequence_stats.g.dart'; // Name of the TypeAdapter that we will generate in the future
+
+@HiveType(typeId: 1)
+class HiveSleepSequenceStats {
+  @HiveField(0)
+  DateTime recordingStart;
+
+  @HiveField(1)
+  DateTime recordingEnd;
+
+  @HiveField(2)
+  int effectiveSleepTimeInSeconds;
+
+  @HiveField(3)
+  double sleepEfficiency;
+
+  @HiveField(4)
+  int sleepLatency;
+
+  @HiveField(5)
+  int wasoInSeconds;
+
+  @HiveField(6)
+  int awakenings;
+
+  @HiveField(7)
+  int remLatency;
+
+  @HiveField(8)
+  int numberTransitions;
+
+  HiveSleepSequenceStats(
+      this.recordingStart,
+      this.recordingEnd,
+      this.effectiveSleepTimeInSeconds,
+      this.sleepEfficiency,
+      this.sleepLatency,
+      this.wasoInSeconds,
+      this.awakenings,
+      this.remLatency,
+      this.numberTransitions);
+}
diff --git a/mobile/lib/src/domain/sleep_sequence/i_sleep_sequence_repository.dart b/mobile/lib/src/domain/sleep_sequence/i_sleep_sequence_repository.dart
index 53001468..f24d3f9a 100644
--- a/mobile/lib/src/domain/sleep_sequence/i_sleep_sequence_repository.dart
+++ b/mobile/lib/src/domain/sleep_sequence/i_sleep_sequence_repository.dart
@@ -1,7 +1,10 @@
 import 'package:polydodo/src/domain/sleep_sequence/sleep_sequence_stats.dart';
 
 abstract class ISleepSequenceRepository {
-  List<SleepSequenceStats> getSleepSequences();
+  List<SleepSequenceStats> getAll();
 
-  void deleteSleepSequences(List<SleepSequenceStats> sequence);
+  void store(List<SleepSequenceStats> sequence);
+
+  void delete(List<SleepSequenceStats> sequences,
+      List<SleepSequenceStats> sequencesToDelete);
 }
diff --git a/mobile/lib/src/domain/sleep_sequence/sleep_sequence_stats.dart b/mobile/lib/src/domain/sleep_sequence/sleep_sequence_stats.dart
index 18ed13ee..283f3a00 100644
--- a/mobile/lib/src/domain/sleep_sequence/sleep_sequence_stats.dart
+++ b/mobile/lib/src/domain/sleep_sequence/sleep_sequence_stats.dart
@@ -4,10 +4,10 @@ import 'package:flutter/foundation.dart';
 
 class SleepSequenceStats extends Entity {
   final DateTimeRange recordingTime;
-  final DateTime effectiveSleepTime;
+  final Duration effectiveSleepTime;
   final double sleepEfficiency;
   final int sleepLatency;
-  final DateTime waso;
+  final Duration waso;
   final int awakenings;
   final int remLatency;
   final int numberTransitions;
diff --git a/mobile/lib/src/infrastructure/connection_repositories/eeg_data_repository.dart b/mobile/lib/src/infrastructure/connection_repositories/eeg_data_repository.dart
index 156cd279..fa2d74b3 100644
--- a/mobile/lib/src/infrastructure/connection_repositories/eeg_data_repository.dart
+++ b/mobile/lib/src/infrastructure/connection_repositories/eeg_data_repository.dart
@@ -57,11 +57,14 @@ class EEGDataRepository implements IEEGDataRepository {
 
   @override
   Future<void> stopRecordingFromStream() async {
-    // todo: move save future to another file
     unawaited(_currentTransformerStream.cancel());
 
     if (_recordingData == null) return;
 
+    _saveRecordingToFile();
+  }
+
+  void _saveRecordingToFile() async {
     final directory = await getExternalStorageDirectory();
     final pathOfTheFileToWrite =
         directory.path + '/' + _recordingData.fileName + '.txt';
diff --git a/mobile/lib/src/infrastructure/constants.dart b/mobile/lib/src/infrastructure/constants.dart
index 58ebdd21..b147e28c 100644
--- a/mobile/lib/src/infrastructure/constants.dart
+++ b/mobile/lib/src/infrastructure/constants.dart
@@ -75,3 +75,6 @@ const OPEN_BCI_CYTON_HEADER = [
     ' Timestamp (Formatted)'
   ]
 ];
+
+const POLYDODO_BOX = 'Polydodo';
+const SLEEP_SEQUENCES_LIST_KEY = 'sequence_list';
diff --git a/mobile/lib/src/infrastructure/sleep_history/mock_data.dart b/mobile/lib/src/infrastructure/sleep_history/mock_data.dart
index f4719e87..2ebb4216 100644
--- a/mobile/lib/src/infrastructure/sleep_history/mock_data.dart
+++ b/mobile/lib/src/infrastructure/sleep_history/mock_data.dart
@@ -5,21 +5,21 @@ import 'package:polydodo/src/domain/unique_id.dart';
 SleepSequenceStats mock_data_1 = SleepSequenceStats(
     id: UniqueId.from('test'),
     awakenings: 3,
-    effectiveSleepTime: DateTime.now(),
+    effectiveSleepTime: Duration(minutes: 59),
     numberTransitions: 5,
     recordingTime: DateTimeRange(start: DateTime.now(), end: DateTime.now()),
     remLatency: 20,
     sleepEfficiency: 20.0,
     sleepLatency: 10,
-    waso: DateTime.now());
+    waso: Duration(minutes: 59));
 
 SleepSequenceStats mock_data_2 = SleepSequenceStats(
     id: UniqueId.from('test2'),
     awakenings: 100,
-    effectiveSleepTime: DateTime.now(),
+    effectiveSleepTime: Duration(minutes: 100),
     numberTransitions: 5,
     recordingTime: DateTimeRange(start: DateTime.now(), end: DateTime.now()),
     remLatency: 20,
     sleepEfficiency: 20.0,
     sleepLatency: 10,
-    waso: DateTime.now());
+    waso: Duration(minutes: 100));
diff --git a/mobile/lib/src/infrastructure/sleep_history/mock_sleep_sequence_repository.dart b/mobile/lib/src/infrastructure/sleep_history/mock_sleep_sequence_repository.dart
new file mode 100644
index 00000000..446fb53a
--- /dev/null
+++ b/mobile/lib/src/infrastructure/sleep_history/mock_sleep_sequence_repository.dart
@@ -0,0 +1,32 @@
+import 'dart:async';
+
+import 'package:polydodo/src/domain/sleep_sequence/i_sleep_sequence_repository.dart';
+import 'package:polydodo/src/domain/sleep_sequence/sleep_sequence_stats.dart';
+import 'package:polydodo/src/infrastructure/sleep_history/mock_data.dart';
+
+class MockSleepSequenceRepository implements ISleepSequenceRepository {
+  final sequenceStreamController = StreamController<SleepSequenceStats>();
+  List<SleepSequenceStats> _sleepSequencesPersistency = [];
+
+  MockSleepSequenceRepository() {
+    _sleepSequencesPersistency.add(mock_data_1);
+
+    _sleepSequencesPersistency.add(mock_data_2);
+  }
+
+  @override
+  List<SleepSequenceStats> getAll() => _sleepSequencesPersistency;
+
+  @override
+  void store(List<SleepSequenceStats> sequenceList) {
+    _sleepSequencesPersistency = sequenceList;
+  }
+
+  @override
+  void delete(List<SleepSequenceStats> sequences,
+      List<SleepSequenceStats> sequencesToDelete) {
+    for (var sequence in sequences) {
+      _sleepSequencesPersistency.remove(sequence);
+    }
+  }
+}
diff --git a/mobile/lib/src/infrastructure/sleep_history/sleep_history_repository.dart b/mobile/lib/src/infrastructure/sleep_history/sleep_history_repository.dart
deleted file mode 100644
index 4ead4c9e..00000000
--- a/mobile/lib/src/infrastructure/sleep_history/sleep_history_repository.dart
+++ /dev/null
@@ -1,26 +0,0 @@
-import 'dart:async';
-
-import 'package:polydodo/src/domain/sleep_sequence/i_sleep_sequence_repository.dart';
-import 'package:polydodo/src/domain/sleep_sequence/sleep_sequence_stats.dart';
-import 'package:polydodo/src/infrastructure/sleep_history/mock_data.dart';
-
-class SleepHistoryRepository implements ISleepSequenceRepository {
-  final List<SleepSequenceStats> _sleepHistoryPersistency = [];
-  final sequenceStreamController = StreamController<SleepSequenceStats>();
-
-  SleepHistoryRepository() {
-    _sleepHistoryPersistency.add(mock_data_1);
-
-    _sleepHistoryPersistency.add(mock_data_2);
-  }
-
-  @override
-  List<SleepSequenceStats> getSleepSequences() => _sleepHistoryPersistency;
-
-  @override
-  void deleteSleepSequences(List<SleepSequenceStats> sequences) {
-    for (var sequence in sequences) {
-      _sleepHistoryPersistency.remove(sequence);
-    }
-  }
-}
diff --git a/mobile/lib/src/infrastructure/sleep_history/sleep_sequence_repository.dart b/mobile/lib/src/infrastructure/sleep_history/sleep_sequence_repository.dart
new file mode 100644
index 00000000..2b86cc19
--- /dev/null
+++ b/mobile/lib/src/infrastructure/sleep_history/sleep_sequence_repository.dart
@@ -0,0 +1,87 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:hive/hive.dart';
+import 'package:polydodo/src/domain/sleep_sequence/hive_sleep_sequence_stats.dart';
+import 'package:polydodo/src/domain/sleep_sequence/i_sleep_sequence_repository.dart';
+import 'package:polydodo/src/domain/sleep_sequence/sleep_sequence_stats.dart';
+import 'package:polydodo/src/domain/unique_id.dart';
+import 'package:polydodo/src/infrastructure/constants.dart';
+
+class SleepSequenceRepository implements ISleepSequenceRepository {
+  final sequenceStreamController = StreamController<SleepSequenceStats>();
+  Box _sleepSequencesListBox;
+
+  SleepSequenceRepository() {
+    _loadHiveBox();
+  }
+
+  void _loadHiveBox() async {
+    _sleepSequencesListBox = await Hive.openBox(POLYDODO_BOX);
+  }
+
+  @override
+  List<SleepSequenceStats> getAll() {
+    return _parseHiveSleepSequenceList(
+        _sleepSequencesListBox.get(SLEEP_SEQUENCES_LIST_KEY) ?? []);
+  }
+
+  @override
+  void store(List<SleepSequenceStats> sequence) {
+    _sleepSequencesListBox.put(
+        SLEEP_SEQUENCES_LIST_KEY, _parseSleepSequenceList(sequence));
+  }
+
+  @override
+  void delete(List<SleepSequenceStats> sequences,
+      List<SleepSequenceStats> sequencesToDelete) {
+    for (var sequence in sequencesToDelete) {
+      sequences.remove(sequence);
+    }
+
+    store(sequences);
+  }
+
+  List<SleepSequenceStats> _parseHiveSleepSequenceList(var historyList) {
+    // ignore: omit_local_variable_types
+    List<SleepSequenceStats> list = [];
+
+    for (var sequence in historyList) {
+      list.add(SleepSequenceStats(
+          id: UniqueId.from(sequence.recordingStart.toString()),
+          awakenings: sequence.awakenings,
+          effectiveSleepTime:
+              Duration(seconds: sequence.effectiveSleepTimeInSeconds),
+          numberTransitions: sequence.numberTransitions,
+          recordingTime: DateTimeRange(
+              start: sequence.recordingStart, end: sequence.recordingEnd),
+          remLatency: sequence.remLatency,
+          sleepEfficiency: sequence.sleepEfficiency,
+          sleepLatency: sequence.sleepLatency,
+          waso: Duration(seconds: sequence.wasoInSeconds)));
+    }
+
+    return list;
+  }
+
+  List<HiveSleepSequenceStats> _parseSleepSequenceList(
+      List<SleepSequenceStats> historyList) {
+    // ignore: omit_local_variable_types
+    List<HiveSleepSequenceStats> list = [];
+
+    for (var sequence in historyList) {
+      list.add(HiveSleepSequenceStats(
+          sequence.recordingTime.start,
+          sequence.recordingTime.end,
+          sequence.effectiveSleepTime.inSeconds,
+          sequence.sleepEfficiency,
+          sequence.sleepLatency,
+          sequence.waso.inSeconds,
+          sequence.awakenings,
+          sequence.remLatency,
+          sequence.numberTransitions));
+    }
+
+    return list;
+  }
+}
diff --git a/mobile/lib/src/locator.dart b/mobile/lib/src/locator.dart
index 91c91893..1920fd94 100644
--- a/mobile/lib/src/locator.dart
+++ b/mobile/lib/src/locator.dart
@@ -8,10 +8,10 @@ import 'package:polydodo/src/domain/acquisition_device/device_locator_service.da
 import 'package:polydodo/src/domain/acquisition_device/i_acquisition_device_repository.dart';
 import 'package:polydodo/src/domain/eeg_data/i_eeg_data_repository.dart';
 import 'package:polydodo/src/domain/sleep_sequence/i_sleep_sequence_repository.dart';
+import 'package:polydodo/src/infrastructure/connection_repositories/serial_repository.dart';
 import 'package:polydodo/src/infrastructure/connection_repositories/bluetooth_repository.dart';
 import 'package:polydodo/src/infrastructure/connection_repositories/eeg_data_repository.dart';
-import 'package:polydodo/src/infrastructure/connection_repositories/serial_repository.dart';
-import 'package:polydodo/src/infrastructure/sleep_history/sleep_history_repository.dart';
+import 'package:polydodo/src/infrastructure/sleep_history/sleep_sequence_repository.dart';
 
 /// Private GetIt instance as we want all DI to be performed here in this file
 final _serviceLocator = GetIt.asNewInstance();
@@ -21,7 +21,7 @@ void registerServices() {
       DeviceLocatorService(BluetoothRepository(), SerialRepository()));
   _serviceLocator.registerSingleton<IEEGDataRepository>(EEGDataRepository());
   _serviceLocator
-      .registerSingleton<ISleepSequenceRepository>(SleepHistoryRepository());
+      .registerSingleton<ISleepSequenceRepository>(SleepSequenceRepository());
 }
 
 /// This function creates all the BlocProviders used in this app
diff --git a/mobile/pubspec.lock b/mobile/pubspec.lock
index d038824d..eb3ce0e1 100644
--- a/mobile/pubspec.lock
+++ b/mobile/pubspec.lock
@@ -225,6 +225,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.9"
+  dartx:
+    dependency: transitive
+    description:
+      name: dartx
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.5.0"
   equatable:
     dependency: "direct main"
     description:
@@ -271,7 +278,7 @@ packages:
       name: flutter_bloc
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.0.6"
+    version: "6.1.1"
   flutter_launcher_icons:
     dependency: "direct dev"
     description:
@@ -285,7 +292,7 @@ packages:
       name: flutter_reactive_ble
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.6.1+1"
+    version: "2.7.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -331,6 +338,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.4.4+1"
+  hive_flutter:
+    dependency: "direct main"
+    description:
+      name: hive_flutter
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.1"
+  hive_generator:
+    dependency: "direct dev"
+    description:
+      name: hive_generator
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.8.2"
   http_multi_server:
     dependency: transitive
     description:
@@ -351,7 +372,7 @@ packages:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.18"
+    version: "2.1.19"
   intl:
     dependency: "direct main"
     description:
@@ -568,7 +589,7 @@ packages:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.4+1"
+    version: "2.1.5"
   share:
     dependency: "direct main"
     description:
@@ -700,6 +721,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.19-nullsafety.2"
+  time:
+    dependency: transitive
+    description:
+      name: time
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
   timing:
     dependency: transitive
     description:
@@ -755,7 +783,7 @@ packages:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.3"
+    version: "1.7.4"
   xdg_directories:
     dependency: transitive
     description:
diff --git a/mobile/pubspec.yaml b/mobile/pubspec.yaml
index a1ab84b4..4925c1d7 100644
--- a/mobile/pubspec.yaml
+++ b/mobile/pubspec.yaml
@@ -35,6 +35,7 @@ dependencies:
   flutter_reactive_ble: ^2.5.2
   get_it: ^4.0.4
   hive: ^1.4.4
+  hive_flutter: ^0.3.1
   intl: ^0.16.1
   meta: ^1.1.8
   path_provider: ^1.6.16
@@ -51,6 +52,8 @@ dev_dependencies:
   flutter_launcher_icons: "^0.7.0"
   flutter_test:
     sdk: flutter
+  hive_generator: ^0.8.2
+
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 # The following section is specific to Flutter.