Learn 1000+ Japanese characters (both drawing and meaning). Just 3 characters at a time! Have fun while learning, growing from white belt to black belt and competing with players around the world.

* Belt system: go from white belt to black belt and higher!
* Learn kanji, the characters of written Japanese, on the go through engaging mini-sessions where you learn 3 characters at a time. Both stroke order and meaning.
* The built-in optical character recognition (OCR) engine can check whether you drew characters correctly or not.
* To help with memorization, we first show you the stroke order, then assist you when you’re drawing the kanji for the first time. Then we expect you can recall it on your own. The blank screen shouldn’t scare you Don’t worry if you get it wrong. We’ll hold your hands until you master them all!
* All the kanjis are organized by levels. You can’t move on to the next level until you finish the current one.
* The adaptive engine tracks your progress and prompts you to review kanjis at just the right time.
* Compete against other learners around the world on the global leaderboard!

We built this app after the frustration from dozens of apps we tried when learning to draw Japanese characters. All of them were plain boring & we would give up after a few days. With Kanji Ninja, our hope is that you will help billions of neural connections to be created and wouldn’t even notice how the time flew.

If you have a minute, please leave your sensei a review in the App Store. It would mean a ton to him!

Become the Kanji Ninja (漢字忍者)!

What's New

Version 2.0

We worked for a year on this update. This is Kanji Ninja 2.0. Let us know how to make it even better!

Ratings and Reviews

4.2 out of 5

9 Ratings

9 Ratings

Makes learning Kanji fun!


I've tried other apps and programs that attempt to teach Kanji, but this app does it so well. It's fun and simple and it gets you coming back daily to learn more!

3-5 because...


Overall I like the app but sometimes when trying to redraw the kanji it's just way to picky on how the app wants it to be drawn. I'm a human not a computer. I can't write perfectly neat.. Hopefully this will get fixed. 🙏. Then this app would be 5/5.

Very engaging!

Aiym's Mac

1st time Japanese learner and i absolutely loved it!
I think it would be pretty cool if there were actual ninja animations at the end like in Mortal Combat beating each other up in battles.


Zero to One Labs LLC
110.4 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
In-App Purchases
  1. KNMonthSubscription $1.99
  2. KNLifeTime $19.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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