Kantan

App Icon Kantan GitHub License GitHub Repo Stars GitHub Release

Kantan is an open-source Japanese dictionary and learning tool for Android Main Window Character Recognition Window Term Details Window Term Details Window Kanji Tab Kanji Details Window Kanji Details Window Android will become a locked-down platform, FIGHT BACK! Installation Get it on GitHub Get it on Obtainium Build Variants Feature Full FOSS Google Play Services Required Not Required Internet Access Required (One-time) Not Required Handwriting Detection Yes No The full app is recommended for most users.

App Description Kantan is a free and open source Japanese dictionary and learning tool designed to make studying simple, intuitive, and accessible. Search right away using words (English), kanji, rōmaji, or even by drawing characters directly on your screen. From there, Kantan helps you explore meanings, readings, and usage without friction. You can also easily review characters and practice recognition whenever you like.

Kantan helps you learn Japanese your way—simply, effectively, and for free (no ads, fully open source).

Features:

Fast and reliable Japanese dictionary with word and kanji lookup Draw characters to search when you don’t know how to type them Add words to favorites and other custom lists Stroke-order diagrams to learn how to write kanji correctly Multiple readings and meanings for each entry Example sentences to understand context Clean, distraction-free interface designed for learning Security & Verification To ensure the integrity of the app, you can verify the signing certificate fingerprint. This fingerprint should match regardless of the version:

Developer Certificate Fingerprint (SHA-256):

B0:02:1B:BA:B4:39:0B:92:32:2F:AC:E5:0F:11:88:DF:BA:40:61:8E:9E:DA:EF:E7:8B:01:63:29:B5:DB:D6:37

Package Name

dev.mariinkys.kantan

APK Verification Every release includes a unique SHA-256 hash of the specific APK file in the Release Notes. You can use AppVerifier to compare the installed app against these values.

Build Instructions Create Main Assets Folder: mkdir -p app/src/main/assets/ Extract Kanji Assets: unzip assets/kanji.zip -d app/src/main/assets Extract Database: unzip assets/databases.zip -d app/src/main/assets Compile the App: ./gradlew assembleFullRelease assembleFossRelease Copyright and Licensing The dictionary words and kanji come from the JMDict and KANJIDIC files owned by the Electronic Dictionary Research and Development Group (www.edrdg.org), and are used in conformance with the Group's license.

The example sentences come from the projects Tatoeba and Tanaka Corpus.

The Kanji strokes information are from KanjiVG provided by Ulrich Apel at kanjivg.tagaini.net.

Kantan specifically uses the JMDict and KANJIDIC files provided by Yomitan

Copyright 2026 © Alex Marín

Released under the terms of the GPL-3.0