LeanType
LeanType is a free, open-source keyboard for Android. Privacy-focused keyboard with AI enhancements. It has 1,035 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
- Android
- Kotlin
- Keyboards
- Actively maintained
About LeanType
LeanType is a privacy-conscious, customizable open-source Android keyboard. Based on the robust foundations of AOSP and HeliBoard. LeanType (Standard) offers a hybrid experience: a private, secure offline core for everyday typing, with powerful AI capabilities available whenever you choose to enable them. Key Features: AI Proofreading & Translation: Instantly fix grammar, rewrite text, or translate sentences using powerful AI. Choose between Gemini, Groq, or OpenAI-compatible backends. Floating Keyboard: Detach the keyboard into a draggable window for seamless multitasking and improved accessibility.
Privacy and F-Droid
F-Droid builds LeanType from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
Similar apps
More open-source keyboards
FlorisBoard
florisboard/florisboard
An open-source keyboard which respects your privacy.
OfficialKeyboardsAndroid
HeliBoard
HeliBorg/HeliBoard
Customizable open-source keyboard.
KeyboardsAndroid
Fcitx5 (RIME Plugin)
fcitx5-android/fcitx5-android
RIME (Rime Input Method Engine) support for Fcitx5.
KeyboardsAndroid
Trime
osfans/trime
Chinese IME with Rime Input Method Engine.
KeyboardsAndroid
AnySoftKeyboard
AnySoftKeyboard/AnySoftKeyboard
We live in a world full of languages. Why not use a multi-lingual keyboard?
KeyboardsAndroid
Unexpected Keyboard
Julow/Unexpected-Keyboard
Lightweight and privacy-conscious virtual keyboard for Android.
KeyboardsAndroid
What is LeanType?
LeanType is a free, open-source keyboard for Android. Privacy-focused keyboard with AI enhancements. It has 1,035 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
Is LeanType free and open source?
Yes. LeanType's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install LeanType?
You can install LeanType from F-Droid (package com.leanbitlab.leantype); the links are on this page. Its GitHub repository also publishes releases (latest: v4.2.8).
Is LeanType still maintained?
The repository's most recent commit was on Oct 7, 2026. Its F-Droid listing was last updated on Sep 22, 2026. appsgit only lists apps whose repository had a commit in the last six months.