Guileless Bopomofo Keyboard
Guileless Bopomofo Keyboard is a free, open-source keyboard for Android. A simple Bopomofo software keyboard (input method editor) for typing Hanyu. It has 135 GitHub stars and is released under the GPL-2.0-or-later license, and you can install it from F-Droid.
github.com/hiroshiyui/GuilelessBopomofo (opens in a new tab)
- Android
- Kotlin
- Keyboards
- Actively maintained
About Guileless Bopomofo Keyboard
Hello, it's me, Guileless Bopomofo Keyboard. I have implemented most features of libchewing ( to provide you a choice of Bopomofo software keyboard (aka input method editor). * Unlike other similar products, though I don't have fuzzy, error-tolerance design, I do still have ability to predict possible phrases by context, and I do remember phrases from your typing history automatically. * Besides the most common "DaChen", I also provide you "Hsu", "E-Ten 26 keys", and "DaChen CP26" Bopomofo keyboard layouts. * I also support physical keyboard input with the same layout options, so you can use a consistent Bopomofo experience across virtual and hardware keyboards. My source code repository:
Privacy and F-Droid
F-Droid builds Guileless Bopomofo Keyboard 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.
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What is Guileless Bopomofo Keyboard?
Guileless Bopomofo Keyboard is a free, open-source keyboard for Android. A simple Bopomofo software keyboard (input method editor) for typing Hanyu. It has 135 GitHub stars and is released under the GPL-2.0-or-later license, and you can install it from F-Droid.
Is Guileless Bopomofo Keyboard free and open source?
Yes. Guileless Bopomofo Keyboard's source code is public on GitHub under the GPL-2.0-or-later 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 Guileless Bopomofo Keyboard?
You can install Guileless Bopomofo Keyboard from F-Droid (package org.ghostsinthelab.apps.guilelessbopomofo); the links are on this page. Its GitHub repository also publishes releases (latest: 4.0.14).
Is Guileless Bopomofo Keyboard still maintained?
The repository's most recent commit was on Sep 27, 2026. Its F-Droid listing was last updated on Sep 29, 2026. appsgit only lists apps whose repository had a commit in the last six months.