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Flash Deck

A simple and easy to use flash card to help you study
New in version 1.11.1
Release 1.11.1+54

Fixes:
* Fix thread safety for RxJava subjects across all notifier classes
* Fix race conditions in TestStateModifier database operations
* Fix memory leak from nested RxJava subscriptions in CardItemSV and NotificationTimerItemSV
* Fix CompositeDisposable leak in DeckItemSV, HomePage, and timer detail dialog

Feature:
* Add translations for German, French, Italian, Romansh, Icelandic, Estonian, Norwegian Bokmål, and Norwegian Nynorsk
A simple and easy to use flash card app to help you study smarter and learn faster!

Create & Manage

  • Easily add decks and flash cards

  • Reversible cards — swap question and answer during tests

  • Copy and move cards between decks

  • Save & Add Another button for quick consecutive card creation

  • Record voices and attach images for your cards



Study & Test

  • Test mode with shuffle and progress tracking

  • Test state persistence — resume your test after app restart

  • Flash bot to smartly suggest cards to test you based on your behavior



Reminders

  • Notification timer to periodically quiz you

  • Notification time window — set start and end times for reminders

  • Voice playback directly from notifications

  • Create shortcut to show random card from deck for casual study (Android 8+)



Import & Export

  • Easily export & share your decks to your friends

  • Import and export decks in Anki .apkg format (supports Basic cards with images and audio)



AI-Powered

  • Generate flash card decks from any topic using Google Gemini AI

  • Transform existing decks with AI — translate, expand, create harder questions, and more

  • AI model selection — choose from available Gemini models



Appearance

  • Support dark mode and light mode

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 1.11.1 (54) suggested Added on Jun 09, 2026

    This version requires Android 6.0 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.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • m.co.rh.id.a_flash_deck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7 MiB PGP Signature | Build Log

  • New in version 1.11.0
    Release 1.11.0+53

    Fixes:
    * Fix potential API key leakage in Gemini API error responses
    * Fix crash when timer is deleted between scheduling and execution
    * Fix deadlock and memory leak in notification handler
    * Fix TOCTOU race condition in AudioPlayer
    * Fix file corruption in copyFile writing full buffer instead of bytes read
    * Fix pagination bug and answer voice data loss
    * Fix off-by-one substring in media import filename extraction
    * Fix temp file not cleaned up on AudioRecorder initializati
  • Version 1.11.0 (53) - Added on May 29, 2026

    This version requires Android 6.0 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.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • m.co.rh.id.a_flash_deck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7 MiB PGP Signature | Build Log

  • New in version 1.10.0
    Release 1.10.0+52

    Fixes:
    * Remove duplicate isReversed column to prevent startup crash
    * Use x-goog-api-key header instead of query param for Gemini API auth

    Feature:
    * Generate Deck from Existing Decks via Gemini AI
    * Navigate to deck card list when tapping AI deck generation notification
  • Version 1.10.0 (52) - Added on May 28, 2026

    This version requires Android 6.0 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.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • m.co.rh.id.a_flash_deck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7.0 MiB PGP Signature | Build Log