Privacy Policy

AmberLark

Last updated: 2026-09-17

AmberLark is an interval timer and routine builder: you put routines together from a bundled catalogue of movements, run them against a countdown, and keep a log of what you finished. This policy describes what AmberLark does and does not do with your data. The short version: AmberLark does not collect, transmit, or share any personal information.

1Information we collect

None. There is no sign-up or login. The only text you type — a display name and routine names — is saved on the device and goes nowhere else.

2Data stored on your device

To make the app work, AmberLark stores the following only on your device, using the operating system's local storage:

  • Routines: titles, movement order, work and rest lengths, round counts and card colour.
  • Session history: routine, start time, work and total time, rounds and intervals completed, effort estimate and whether you finished.
  • Profile: your display name and avatar glyph.
  • Preferences: lead-in, work length, rest length, weekly goal, roll straight through, show what is next and less movement.
  • Whether you have seen the intro slides.

This data never leaves your device. It is not uploaded to AmberLark or to any third party. Uninstalling the app or clearing its storage deletes all of it permanently.

3Permissions

AmberLark asks for no runtime permissions: no camera, microphone, location, contacts, photos, storage or notifications. The Android manifest carries android.permission.INTERNET, added by the Flutter toolchain; it is never prompted for and the app never opens a connection.

4Network use

AmberLark runs fully offline and works the same in airplane mode. The Share progress button hands a short summary of your own session count and work minutes to Android’s share sheet; you choose where it goes, and the app sends nothing by itself.

5Third-party services

No analytics, crash reporting, advertising or attribution SDKs and no cloud backend. The app is built on open-source Flutter packages that run on the device: flutter_riverpod, hive, shared_preferences, fl_chart, confetti, gap and share_plus.

6Children's privacy

AmberLark collects nothing from anyone, including children under 13 (COPPA) or under 16 (GDPR-K). It has no ads, no in-app purchases and no external links.

7Your rights

Delete a history entry from the Progress screen, delete a routine from its menu, or clear everything with Android’s “Clear storage” or by uninstalling. Nothing is transmitted, so there is no copy for us to access, export or delete.

8Changes to this policy

If this policy ever changes, the "Last updated" date at the top of this page will be revised. Material changes will be noted in the app's release notes.

9Contact

If you have any questions about this policy, please reach out: [email protected]