Kaku Japanese Dictionary (OCR)

415 reviews
Content rating
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About this app

🌸 The Quickest Way to Lookup Kanji on Your Device
Kaku is a fast, powerful Japanese dictionary that stays on top of all your apps. It uses optical character recognition (OCR) technology to recognize kanji on the device screen for you (rather than the slowww tedious process of looking up individual characters manually), making it perfect for Japanese learners who want to study by reading raw manga, play untranslated mobile games, and so on without the hassle of switching apps on Android.

🌸 Inspired by the Best Japanese Reading Tools
If you ever used KanjiTomo, this is the Android equivalent. Kaku is also the closest you can get to browser extensions like Rikaikun / Rikaichan / Rikaisama / Yomichan on Android.

🌸 Open up Endless Study Opportunities
Being able to quickly lookup kanji inside any app makes it easier to practice Japanese than ever. Use Kaku to:
 • Transition to reading your favorite manga in Japanese instead of English
 • Play numerous untranslated Japanese mobile games not available in the English
 • Easily lookup kanji in apps that don't allow copying of text, i.e., Twitter
 • Read Japanese in the original app instead of "sharing" the text to another reader app
 • Use Kaku with Chrome as Android's version of the Rikai-tachis
 • Lookup kanji in random images you may encounter

🌸 Keeping it Classy and Free
Kaku works entirely offline and does not collect nor send user data. Finally, Kaku is open-source, and you can browse the code here: https://github.com/0xbad1d3a5/Kaku

Updated on
May 9, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

415 reviews
Googler AB
December 11, 2021
Hey so first of all thanks for this amazing app, I just wanted to know if it was possible to add an option to make the app’s notification persistent, so we can easily and quickly enable it from there (the current behavior is that the notification is automatically dismissed after I click on shutdown, but keeping it there would be really handy, as we can just click on turn on to have it back on, without needing to go all the way back to the app drawer and launch the app again) ,this is just a suggestion but I hope you take it into consideration
1 person found this review helpful
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December 11, 2021
If you click on the text of the notification itself instead of any of the buttons, it will sleep the app and persist Kaku's notification so you can quick-launch it again.
Matt Deckard
January 10, 2020
Great app. It did take me a while to figure out how to turn pages. Also it seems like the latest Android release might have broken the way you could tap the notification pane to put the window in sleep mode. All in all this is an indispensable app for intermediate Japanese learners who want to use their mobile device to practice reading.
3 people found this review helpful
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May 28, 2019
The controls are cumbersome, tedious, and hard to get used to, but this app saves stunningly huge amounts of time and frustration nonetheless. I can't find anything like it elsewhere, so five stars. Better controls, please! Also if it could integrate with some of the other popular Japanese apps like Kanji Study or Anki, that would be awesome.
12 people found this review helpful
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What's new

Downgrade Tesseract version as it was causing issues with vertical text recognition.