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Thumb-Key

Name: Thumb-Key
Author: heretic

heretic

A privacy-conscious keyboard made for your thumbs.

Internet
FOSS
Free
No ads
No tracking

Android only

Get Thumb-Key

Get it on F-Droid Get it on IzzyOnDroid Get it on GitHub Get it on Zapstore

What are these stores? F-Droid, IzzyOnDroid, GitHub, Zapstore

Thumb-Key is a privacy-conscious smart keyboard, made specifically for your thumbs. It features a 3x3 grid layout , and uses swipes for the less common letters. Its easy to learn, and designed for fast typing speeds.

Developer: heretic
Source code: github.com/dessalines/thumb-key
Added to AppCosmos: 10 October 2026
License: AGPL-3.0-only