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ATOK vs Sumire Japanese Keyboard: catalog facts
ATOK	Sumire Japanese Keyboard
Paid Sold as the ATOK Passport subscription with a free trial.	Free Free and open source under the MIT licence.
Windows, macOS, Android, iOS	Android
Conversion engine that adapts to your typing habits 63 optional genre dictionaries	All conversion and learning data stays on the device Kana and romaji input with candidate conversion
Subscription required after the trial Website and interface are in Japanese	The F-Droid Lite build leaves out some features of the full app Project documentation is mostly in Japanese
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.