# Sumire Japanese Keyboard Lite (open-source keyboard)

> Sumire Japanese Keyboard Lite is a free, open-source keyboard for Android. Private offline Japanese keyboard with user dictionary and snippets. It has 351 GitHub stars and is released under the MIT license, and you can install it from F-Droid and Google Play.

Sumire is a Japanese keyboard for people who want local-first input and predictable behavior. Typing, conversion, personalization, and learning data stay on the device. The Lite F-Droid build focuses on the core keyboard experience: - kana and romaji input with Japanese candidate conversion - user dictionary and reusable text snippets - clipboard-based helpers and customizable keyboard layouts - emoji and symbol keyboards This flavor excludes the optional Zenz and Gemma model features so it can be distributed on F-Droid with the free-software components needed for everyday typing. The app does not request Internet access.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/KazumaProject/JapaneseKeyboard |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 351 |
| License | MIT (open source) |
| F-Droid | https://f-droid.org/packages/com.kazumaproject.markdownhelperkeyboard.lite.fdroid/ (package com.kazumaproject.markdownhelperkeyboard.lite.fdroid) |
| F-Droid anti-features | none flagged |
| Google Play | https://play.google.com/store/apps/details?id=com.kazumaproject.markdownhelperkeyboard |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Keyboards |
| Latest release | v1.7.128 (Oct 5, 2026) |
| Last commit | Oct 7, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

## Similar mobile apps

- [FlorisBoard](https://appsgit.com/mobile-apps/florisboard): An open-source keyboard which respects your privacy. (8,690 stars, Apache-2.0, official)
- [HeliBoard](https://appsgit.com/mobile-apps/heliboard): Customizable open-source keyboard. (6,290 stars, GPL-3.0-only)
- [Fcitx5 (RIME Plugin)](https://appsgit.com/mobile-apps/fcitx5-rime-plugin): RIME (Rime Input Method Engine) support for Fcitx5. (5,735 stars, LGPL-2.1-only)
- [Trime](https://appsgit.com/mobile-apps/trime): Chinese IME with Rime Input Method Engine. (4,700 stars, GPL-3.0-or-later)
- [AnySoftKeyboard](https://appsgit.com/mobile-apps/anysoftkeyboard): We live in a world full of languages. Why not use a multi-lingual keyboard? (3,382 stars, Apache-2.0)
- [Unexpected Keyboard](https://appsgit.com/mobile-apps/unexpected-keyboard): Lightweight and privacy-conscious virtual keyboard for Android. (3,282 stars, GPL-3.0-only)

---

Canonical page: https://appsgit.com/mobile-apps/sumire-japanese-keyboard-lite
Source: appsgit (https://appsgit.com), the app store for github. Data from the GitHub API, refreshed nightly.
Machine access: JSON API https://appsgit.com/api/v1/apps (OpenAPI: https://appsgit.com/openapi.json), MCP server https://mcp.appsgit.com/mcp, full index https://appsgit.com/llms-full.txt.