Repo:	F-Droid Main
AppID:	ch.cryptobit.letterbox
Author:	Tobias Mueller
License:	GPL-3.0-only
Donation:
InRepoSince:	2021-01-12
LastRepoUpdate:	2026-10-22
LastAppUpdate:	Unknown
LastVersion:	1.7.0
Categories:	Educational Game
APK source:
Google Play:	Check if it's there

LetterBox is a game for young children who are learning their letters. It shows a picture, usually an animal, and three letters. Tap the letter the word starts with. Tap the picture to hear its name.

After a wrong answer, the same picture comes back so your child can try again. There are no scores, timers, or penalties.

Features

• Nine languages: English, German, French, Spanish, Italian, Polish, Brazilian Portuguese, Japanese (hiragana), and Korean (hangul). The language can be changed in the menu, independently of the system language.


• About 70 pictures, with several pictures for many letters, so rounds stay varied.


• Practise a selection of letters: all of them, the ten most common, or just one.


• Optional progress tracking: letters your child knows well come up less often. Progress fades gently after a few weeks without practice, so forgotten letters return.


• Works with a physical keyboard: press 1, 2, or 3, or the letter itself.


• The menu button can be hidden until the app is closed, so small hands do not change settings by accident. Press and hold the top-right corner to bring it back.

Privacy
LetterBox requests no permissions and has no internet access. There are no ads and no tracking. Progress is stored only on the device and is excluded from cloud backups.