Mobile app · Education & science

Sumire Japanese Keyboard Lite F-Droid

Private offline Japanese keyboard with user dictionary and snippets.

Completely free
Android
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by F-Droid
License: MIT — Open source (permissive)confirmed by F-Droid
Open source: Yes
Commercial use: Yesconfirmed by F-Droid
Account required: not documented
Credit card required: Noconfirmed by F-Droid
Watermark: Not applicable
Ads: No
Platforms: AndroidEstablished by Android: F-Droid
Distribution: Available on F-Droid
Publisher: Kazuma Naka
Latest version: 1.7.140-lite-fdroid (4 November 2026)
Latest activity: 4 November 2026
Source code: github.com/KazumaProject/JapaneseKeyboard

Overview

Sumire Japanese Keyboard Lite F-Droid is an on-screen keyboard, available on Android.

Features described in its F-Droid listing: offline use.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Private offline Japanese keyboard with user dictionary and snippets” — F-Droid, 10 November 2026
“Sumire is a Japanese keyboard for people who want local-first input and predictable behavior.” — F-Droid, 10 November 2026
“Voice input uses the microphone permission only when you choose to use speech recognition provided by your device.” — F-Droid, 10 November 2026

At a glance

All of Sumire Japanese Keyboard Lite F-Droid is free: no feature is locked behind a paid plan, and its code is open.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
No advertising
Commercial use allowed

Sources and checks

Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) — 6 November 2026
Last technical check: 6 November 2026
Description from F-Droid — F-Droid (citation courte)

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