A simple Bopomofo software keyboard (input method editor) for typing Hanyu
About this app
Hello, it's me, Guileless Bopomofo Keyboard.
I have implemented most features of libchewing (https://chewing.im/), 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: https://github.com/hiroshiyui/GuilelessBopomofo
Licensed under GPL-2.0-or-later, by Hui-Hong You.
What's New in v4.0.11
Imported from the F-Droid repository index.
- Hi there! Guileless Bopomofo 4.0.11 improves emoji handling and refreshes the underlying engine.
- * Fixed emoji getting garbled while crossing between the app and the Chewing engine, so single-code-point emoji now display and store correctly in the candidate list and your user phrases. (#11)
- * Updated the libchewing engine and refreshed the build dependencies and Rust toolchain.
- Thanks for using Guileless Bopomofo!
Version history
Jul 15, 2026 · 12.5 MB · Android API 23–37 · code 211
Imported from the F-Droid repository index.
- Hi there! Guileless Bopomofo 4.0.11 improves emoji handling and refreshes the underlying engine.
- * Fixed emoji getting garbled while crossing between the app and the Chewing engine, so single-code-point emoji now display and store correctly in the candidate list and your user phrases. (#11)
- * Updated the libchewing engine and refreshed the build dependencies and Rust toolchain.
- Thanks for using Guileless Bopomofo!
SHA-256 8a10d7691ce1dd3885dee6fdb62a4d36a0a4ca4b790dbc341f866599ead8e1db
Jun 9, 2026 · 15.6 MB · Android API 23–37 · code 210
Imported from the F-Droid repository index.
- Hi there! Guileless Bopomofo 4.0.10 fixes a physical keyboard issue.
- * Fixed the symbol picker on physical keyboards: pressing the `‵` key and choosing a category (such as brackets) now opens the second-level menu instead of dropping back to the input screen. (#73)
- Thanks for using Guileless Bopomofo!
SHA-256 827a133d86d4845a6f64ba1dc34164a982f00cf2694b951c7b8fbcd2ae8cc7c9
May 27, 2026 · 15.6 MB · Android API 23–37 · code 209
Imported from the F-Droid repository index.
- Hi there! Guileless Bopomofo 4.0.9 is a small follow-up to 4.0.8.
- * Reverted the offline announcements facility introduced in 4.0.8 (bell icon, unread badge, and auto-popup are removed).
- Thanks for using Guileless Bopomofo!
SHA-256 ce9642a133fd334416a35430f4b6fb6a7b28cfc4299b609ca75493b1761be698
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.ghostsinthelab.apps.guilelessbopomofo is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 4.0.10 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Guileless Bopomofo Keyboard first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Guileless Bopomofo Keyboard, and a listing is removed when the evidence for it stops holding up.
Get Guileless Bopomofo Keyboard
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Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
8a10d7691ce1dd3885dee6fdb62a4d36a0a4ca4b790dbc341f866599ead8e1db
Signing certificate
9357160103d4913feceeb5a4ad51cc094a980e8d94f4ca24cbfb38ec6a94758e
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Previous Versions
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