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reReminder

Open-source recurring reminders, many timers, own schedules, no tracking.
New in version 4.0.1
reReminder 4.0.1 - hotfix

- Time windows respect the interval (#15): a window no longer restarts the reminder at its opening. The interval alone decides when the next event is; the window only decides whether it may go off.
- No more early alerts ahead of a window opening or at the end of a window.
- Tip: to line events up with a window, set the start to its opening.
- Alarms that cannot cover the screen fall back to a notification with sound.
reReminder keeps you in the loop. Set up as many recurring reminders as you need — a nudge to correct your posture, a break every hour, water, medication, a Pomodoro timer, and let each one run on its own schedule.



Several reminders, side by side

Run "Take a walk" every 50 minutes and "Sit or stand" every 20 minutes at the same time. Every reminder has its own interval, name, message and color, and counts down independently, changing one never disturbs the others. One master switch pauses everything and shows you which reminder is up next.



Reminders that fit your day

Limit a reminder to certain weekdays and to a time window, for example Monday to Friday between 08:00 and 17:00. Windows may cross midnight for night shifts. Outside its window a reminder stays quiet and tells you when it starts again. Schedules are optional, a new reminder simply runs at any time.



Notification text that writes itself

Drop values into your message, and they are filled at the moment the reminder fires: the current time, the date, the weekday, the reminder's name, its interval, or when the next one is due. A live preview shows the result while you type.



Made to actually fire

reReminder uses exact alarms that survive Doze, reboots, app updates and timezone changes, and it arms the next alarm before it even shows the current one, so the loop cannot break. A reliability check in the settings tells you whether the system is holding your reminders back, and takes you straight to the setting that fixes it.



Features:



  • Unlimited reminders: each with its own interval, from one minute to many hours.

  • Schedules: pick weekdays and a daily time window per reminder.

  • Dynamic text: insert time, date, weekday, name, interval or next due time.

  • Text-to-Speech: have your reminder read aloud, in your device language.

  • Personalized alerts: choose a notification sound or vibration pattern, and mute either one per reminder.

  • Master switch: pause everything at once without losing your setup.

  • Material 3 design: dynamic colors on Android 12+, full dark mode.

  • English and German, with per-app language support.



Private by design: no ads, no tracking, no accounts, no network access. Everything stays on your device. reReminder is free and open source.



🇪🇺 Made with passion in Europe.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.0.1 (8) suggested Added on Oct 15, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "systemExempted"
      Allows the app to make use of foreground services with the type "systemExempted"
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked device
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.olaf.rereminder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.8 MiB PGP Signature | Build Log

  • New in version 4.0
    reReminder 4.0

    - Repeat every N days, weeks or months, on chosen days
    - Several time windows per reminder
    - Early alerts before each event
    - Alarm mode: full screen, rings until dismissed or snoozed
    - Sound or speech per reminder; the chosen sound is the one you hear
    - One-tap sound / vibrate / mute
    - Speak at notification, media or alarm volume
    - Swipe to delete with Undo, sorting, reordering, compact list
    - More reliable: fires after reboot before unlock, no drift, respects Do Not Disturb
  • Version 4.0 (7) - Added on Oct 14, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "systemExempted"
      Allows the app to make use of foreground services with the type "systemExempted"
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked device
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.olaf.rereminder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.8 MiB PGP Signature | Build Log

  • New in version 3.1.1
    reReminder 3.1.1 - polish and fixes.

    - Countdowns no longer flash the whole line every second; only the changing digits roll.
    - Interval presets now apply exactly as tapped.
    - Weekday pills no longer bump into each other.
    - Title no longer flickers at the end of a list.
    - Smoother closing of screens, incl. the back gesture.
    - Delete dialog closes right away.
    - Double taps can no longer save a reminder twice or close the app to an empty screen.
    - Countdowns no longer skip seconds.
  • Version 3.1.1 (6) - Added on Sep 25, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • control vibration
      Allows the app to control the vibrator.
    • com.olaf.rereminder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.7 MiB PGP Signature | Build Log