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Sumatora Dictionary vs JMdict droid: catalog facts
Sumatora Dictionary	JMdict droid
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under GPL-3.0-only. JMdict data is separately licensed under CC BY-SA…
Android	Android
Searches Japanese in romaji, hiragana and katakana Supports nine search languages	Searches Japanese to English and English to Japanese Supports kanji, kana, romaji and basic wildcards
Android app only	Dictionary data must be downloaded or loaded separately Android app only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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