diff --git a/EditSet.tsx b/EditSet.tsx
index 9d15f9e..83ca82e 100644
--- a/EditSet.tsx
+++ b/EditSet.tsx
@@ -13,7 +13,7 @@ import {SnackbarContext} from './MassiveSnack';
 import Set from './set';
 import {addSet, updateSet} from './set.service';
 import SetForm from './SetForm';
-import {settings} from './settings.service';
+import {getSettings, settings, updateSettings} from './settings.service';
 
 export default function EditSet() {
   const {params} = useRoute<RouteProp<HomePageParams, 'EditSet'>>();
@@ -47,6 +47,10 @@ export default function EditSet() {
       !!settings.vibrate,
       settings.sound,
     );
+    const next = new Date();
+    next.setTime(next.getTime() + milliseconds);
+    await updateSettings({...settings, nextAlarm: next.toISOString()});
+    await getSettings();
   }, []);
 
   const update = useCallback(
diff --git a/MassiveFab.tsx b/MassiveFab.tsx
index 6bb1bbc..207463b 100644
--- a/MassiveFab.tsx
+++ b/MassiveFab.tsx
@@ -13,7 +13,6 @@ export default function MassiveFab(
 
   return (
     <FAB
-      {...props}
       icon="add"
       color={fabColor}
       style={{
@@ -22,6 +21,7 @@ export default function MassiveFab(
         bottom: 60,
         backgroundColor: color,
       }}
+      {...props}
     />
   );
 }
diff --git a/Routes.tsx b/Routes.tsx
index e1332fe..6129940 100644
--- a/Routes.tsx
+++ b/Routes.tsx
@@ -11,6 +11,7 @@ import PlanPage from './PlanPage';
 import Route from './route';
 import {getSettings, settings} from './settings.service';
 import SettingsPage from './SettingsPage';
+import TimerPage from './TimerPage';
 import WorkoutsPage from './WorkoutsPage';
 
 const Drawer = createDrawerNavigator<DrawerParamList>();
@@ -36,6 +37,7 @@ export default function Routes() {
     {name: 'Plans', component: PlanPage, icon: 'calendar'},
     {name: 'Best', component: BestPage, icon: 'stats-chart'},
     {name: 'Workouts', component: WorkoutsPage, icon: 'barbell'},
+    {name: 'Timer', component: TimerPage, icon: 'time'},
     {name: 'Settings', component: SettingsPage, icon: 'settings'},
   ];
 
diff --git a/TimerPage.tsx b/TimerPage.tsx
new file mode 100644
index 0000000..2569055
--- /dev/null
+++ b/TimerPage.tsx
@@ -0,0 +1,93 @@
+import {useFocusEffect} from '@react-navigation/native';
+import React, {useCallback, useEffect, useState} from 'react';
+import {NativeModules, View} from 'react-native';
+import {Button, Text} from 'react-native-paper';
+import {MARGIN, PADDING} from './constants';
+import {
+  getNext,
+  getSettings,
+  settings,
+  updateSettings,
+} from './settings.service';
+
+export default function TimerPage() {
+  const [next, setNext] = useState(new Date());
+  const [ms, setMs] = useState(0);
+  const [intervalId, setIntervalId] = useState(0);
+
+  const seconds =
+    ms > 0
+      ? Math.floor((ms / 1000) % 60)
+          .toString()
+          .padStart(2, '0')
+      : '00';
+
+  const minutes =
+    ms > 0
+      ? Math.floor(ms / 1000 / 60)
+          .toString()
+          .padStart(2, '0')
+      : '00';
+
+  useFocusEffect(
+    useCallback(() => {
+      getNext().then(nextIso =>
+        setNext(nextIso ? new Date(nextIso) : new Date()),
+      );
+    }, []),
+  );
+
+  const tick = (date: Date) => {
+    const remaining = date.getTime() - new Date().getTime();
+    console.log(`${TimerPage.name}.useEffect`, {remaining});
+    if (remaining <= 0) return;
+    setMs(remaining);
+  };
+
+  useEffect(() => {
+    console.log(`${TimerPage.name}.useEffect:`, {next});
+    const date = next || new Date();
+    tick(date);
+    const id = setInterval(() => {
+      tick(date);
+    }, 1000);
+    setIntervalId(oldId => {
+      clearInterval(oldId);
+      return id;
+    });
+    return () => clearInterval(id);
+  }, [next]);
+
+  const stop = () => {
+    NativeModules.AlarmModule.stop();
+    setNext(new Date());
+    updateSettings({...settings, nextAlarm: undefined});
+    getSettings();
+    tick(new Date());
+    setMs(0);
+  };
+
+  const add = async () => {
+    console.log(`${TimerPage.name}.add:`, {intervalId, next});
+    const date = next || new Date();
+    date.setTime(date.getTime() + 1000 * 60);
+    await updateSettings({...settings, nextAlarm: date.toISOString()});
+    setNext(date);
+    NativeModules.AlarmModule.add(ms, !!settings.vibrate, settings.sound);
+    tick(date);
+  };
+
+  return (
+    <View style={{padding: PADDING, alignItems: 'center'}}>
+      <Text>
+        {minutes}:{seconds}
+      </Text>
+      <Button style={{marginTop: MARGIN}} onPress={stop}>
+        Stop
+      </Button>
+      <Button style={{marginTop: MARGIN}} onPress={add}>
+        Add 1 min
+      </Button>
+    </View>
+  );
+}
diff --git a/android/app/src/main/java/com/massive/AlarmModule.kt b/android/app/src/main/java/com/massive/AlarmModule.kt
index 6374733..cd1178a 100644
--- a/android/app/src/main/java/com/massive/AlarmModule.kt
+++ b/android/app/src/main/java/com/massive/AlarmModule.kt
@@ -25,6 +25,26 @@ class AlarmModule internal constructor(context: ReactApplicationContext?) :
         return "AlarmModule"
     }
 
+    @RequiresApi(api = Build.VERSION_CODES.O)
+    @ReactMethod
+    fun add(milliseconds: Int, vibrate: Boolean, sound: String?) {
+        Log.d("AlarmModule", "Add 1 min to alarm.")
+        val addIntent = Intent(reactApplicationContext, TimerService::class.java)
+        addIntent.action = "add"
+        addIntent.putExtra("vibrate", vibrate)
+        addIntent.putExtra("sound", sound)
+        addIntent.data = Uri.parse("$milliseconds")
+        reactApplicationContext.startService(addIntent)
+    }
+
+    @RequiresApi(api = Build.VERSION_CODES.O)
+    @ReactMethod
+    fun stop() {
+        Log.d("AlarmModule", "Stop alarm.")
+        val intent = Intent(reactApplicationContext, TimerService::class.java)
+        reactApplicationContext.stopService(intent)
+    }
+
     @RequiresApi(api = Build.VERSION_CODES.O)
     @ReactMethod
     fun timer(milliseconds: Int, vibrate: Boolean, sound: String?) {
diff --git a/db.ts b/db.ts
index 71314cf..024ffc6 100644
--- a/db.ts
+++ b/db.ts
@@ -100,6 +100,9 @@ const migrations = [
   `
     ALTER TABLE settings ADD COLUMN steps BOOLEAN DEFAULT 1
   `,
+  `
+    ALTER TABLE settings ADD COLUMN nextAlarm TEXT NULL
+  `,
 ];
 
 export let db: SQLiteDatabase;
diff --git a/drawer-param-list.ts b/drawer-param-list.ts
index a2676d3..8fea9ed 100644
--- a/drawer-param-list.ts
+++ b/drawer-param-list.ts
@@ -4,5 +4,5 @@ export type DrawerParamList = {
   Best: {};
   Plans: {};
   Workouts: {};
-  Loading: {};
+  Timer: {};
 };
diff --git a/settings.service.ts b/settings.service.ts
index 3e6333f..6e94451 100644
--- a/settings.service.ts
+++ b/settings.service.ts
@@ -17,3 +17,10 @@ export const updateSettings = async (value: Settings) => {
   const values = keys.map(key => value[key]);
   return db.executeSql(update, values);
 };
+
+export const getNext = async (): Promise<string | undefined> => {
+  const [result] = await db.executeSql(
+    `SELECT nextAlarm FROM settings LIMIT 1`,
+  );
+  return result.rows.item(0)?.nextAlarm;
+};
diff --git a/settings.ts b/settings.ts
index 8da7ce3..a1690ce 100644
--- a/settings.ts
+++ b/settings.ts
@@ -9,4 +9,5 @@ export default interface Settings {
   color?: string;
   workouts: number;
   steps: number;
+  nextAlarm?: string;
 }