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Android 1.5 and up
Declares minSdkVersion 3, so it can be installed on devices far older than what mainstream keyboards still support, while targeting Android 14.
Free · Open source · No ads · No internet access
The tiny, fast keyboard for every Android.
Runs on Android 1.5 and up, fits in under 1 MB, and packs 60+ layouts, offline suggestions, emoji and clipboard history.
Download APKView source
1.5+Android version
< 1 MBwhole APK
60+layouts
13offline dictionaries
0network permissions
Built for old, slow and low-end phones
Most keyboards keep growing. UsableKey does the opposite: no libraries, no frameworks, no cloud.
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Under 1 MB
The entire APK, with 13 compact dictionaries and 60+ layouts, is smaller than a single photo. Great for tight storage.
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Fast by design
Plain Android views, about 3,700 lines of Java, precompiled dictionaries and no background network work. Less to load, less to run.
How it compares in general with typical full-size keyboards:
| UsableKey | Typical keyboard | |
|---|---|---|
| Oldest Android | 1.5 (API 3) | Often 5.0 or newer |
| Install size | < 1 MB | Tens of MB |
| Internet access | None | Often requested |
| Ads / accounts | None | Varies |
| Source code | MIT, open | Often closed |
Everything you need to type
Small does not mean basic.
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60+ layouts
QWERTY, QWERTZ, AZERTY, Dvorak, Colemak, Cyrillic, Arabic, Hebrew, Thai, Devanagari and more, generated from Unicode CLDR.
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Offline suggestions
Word prediction and auto-correct for 13 languages with fuzzy matching, plus your own dictionary.
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Emoji
Categories, recents and flags.
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Clipboard history
Text and images, with an image shelf for sending pictures into apps.
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Editing tools
Arrows, select, cut/copy/paste, undo/redo, Ctrl/Alt/Fn.
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Themes
Dark, light, AMOLED and blue. Adjust key height and long-press delay.
Screenshots
Swipe through the keyboard and settings.
Get started in a minute
- Download the APK from the latest release and install it.
- Open UsableKey and tap Enable keyboard.
- Tap Switch to UsableKey, then choose your languages.
FAQ
Which Android versions does UsableKey support?
UsableKey is built with minSdkVersion 3, which is Android 1.5 Cupcake, and targets Android 14. It is developed and tested on a recent device; very old versions are untested, so please report any problems.
How big is UsableKey?
The whole APK, including 13 dictionaries and 60+ layouts, is under 1 MB. It uses no third-party libraries.
Does UsableKey send my typing anywhere?
No. It does not request the INTERNET permission, so it cannot send data off your device. Suggestions and the clipboard history are stored locally.
Is UsableKey free?
Yes. It is open source under the MIT license, with no ads and no accounts.
How do I install it?
Download the APK from the latest GitHub release, install it, then open the app and follow Enable keyboard and Switch to UsableKey.