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Language Dex

Create custom dictionaries and retain words with puzzles.
New in version 0.30.1
- Removed x86 targets to reduce apk size
- Removed foreground service
Keep track of your growing vocabulary through custom dictionaries.

Every word is defined by you! Each definition can be adapted over time as your understanding improves.

Features:

  • Specify part of speech, definitions, examples, and pronunciation for every word.

  • Paste excerpts into the reader to see existing definitions and easily add new words.

  • Practice with puzzles that test your knowledge, spelling, and ability to recall words.

  • Specify your confidence level to affect how often a word appears in practice games.

  • View language stats and share with friends.


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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 0.30.1 (63) suggested Added on Sep 27, 2026

    arm64-v8a armeabi-v7a

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • 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.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.arthurcose.languagedex.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 52 MiB PGP Signature | Build Log

    • New in version 0.30.0
    - Reduced install size
  • Version 0.30.0 (61) - Added on Aug 21, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 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 "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.arthurcose.languagedex.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 100 MiB PGP Signature | Build Log

    • New in version 0.29.6
    - Fixed tutorial text failing to load
    - Fixed missing `:` after Longest Word in statistics
    - Fixed Read tab treating known compound words as new words
    - Fixed error from leaving recording without stopping it
    - Adjusted padding for spelling in definition bubbles
  • Version 0.29.6 (58) - Added on Dec 01, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

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

    Permissions
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • control vibration
      Allows the app to control the vibrator.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.arthurcose.languagedex.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 90 MiB PGP Signature | Build Log

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