Language Dex icon

Language Dex

Arthur Cosentino
Science & Education
Version
0.32.1
Size
50.8 MB
Requires
Android API 24+
4.2 / 5 · 3,978 ratings 7 downloads

Updated Sep 22, 2026

Quick answer

Create custom dictionaries and retain words with puzzles.

F-Droid repository metadata

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.

Screenshots

Language Dex screenshot 1
Language Dex screenshot 2
Language Dex screenshot 3
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Language Dex screenshot 5
Language Dex screenshot 6

What’s new

- Modernized the settings menu
- Increased the touch target size for words in the Read tab
- Pat counter now shows the live count
- Fixed DB export failing to link word variants
- Fixed removed accents in words added through the Read tab

How to install

  1. Download the APK from the button at the top of this page.
  2. Allow “Install unknown apps” for your browser or file manager only, not for every app.
  3. Open the downloaded file and confirm the installation.
  4. If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.

Data safety

  • Every file is checked against its published SHA-256 before it is listed.
  • Files are scanned for malware on every update.
  • The permissions each app requests are listed on its own page.
  • Read the full safety policy for how we test, flag, and delist files.

Frequently asked questions

What is Language Dex?
Create custom dictionaries and retain words with puzzles.
Who develops Language Dex?
Language Dex is developed by Arthur Cosentino.
Which Android version does Language Dex require?
Language Dex requires Android API 24 or later.
What is the current version of Language Dex?
The synchronized F-Droid version is 0.31.4.
Which license does Language Dex use?
The signed F-Droid metadata lists GPL-3.0-only.
Where is the source code for Language Dex?
https://github.com/arthurcose/language-dex

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