Every character.
A whole new story.
Readings, meanings, radicals, and historical forms. Get to know the kanji behind the strokes.
Discover your first kanji
A little love for learningThat beautiful, complicated world of Japanese?
It’s closer than you think. Swipe, draw, and discover
a little more every day with Kanji Koi.
A familiar shape.
A new connection.
From your first kanjito your next big breakthrough
Two ways to make it stickSwipe to remember. Draw to understand.
Room to keep growingEvery stage of your JLPT journey
A LITTLE CURIOSITY GOES A LONG WAY
Go beyond remembering a shape.
Discover its meaning, find its story,
and make it part of your world.
Readings, meanings, radicals, and historical forms. Get to know the kanji behind the strokes.
Discover your first kanji
A little love for learningWatch your practice add up, one character and one day at a time.

Follow guided strokes, practice by hand, and turn unfamiliar shapes into something natural.
Create your own lists, save characters you love, and add notes that make them yours.
On the morning train or off the beaten path. Your core study tools work offline, too.
A HABIT THAT FEELS LIKE YOU
No perfect routine required.
Just a little space for something you love.
Pick your JLPT level, explore school-grade kanji, or build a list inspired by your everyday life.
A quick moment for flashcards or a slower one for writing. Find the practice that fits your day.
See your progress grow, revisit tricky characters, and celebrate the things that finally click.
A lot to look forward to.
YOUR WORLD, YOUR COLORS
Learning should feel good. Keep things classic with Happy Koi orange, or find a new favorite with the extra themes in Kanji Koi+.
Your colors. Your cards. Your kind of calm.
Try a little change of scenery.NOTES ALONG THE WAY
A FEW THINGS YOU MIGHT BE WONDERING
Here’s a little clarity before
your first character.
Yes! You can get started and practice kanji for free. Kanji Koi+ is an optional upgrade for extras such as an ad-free experience, additional themes, and syncing your progress across devices.
Absolutely. Start with the introductory practice, learn your first characters, and work through the beginner-friendly N5 lists at your own pace. Readings, meanings, and guided strokes help you make each new connection.
Kanji Koi includes study lists for estimated JLPT levels N5 through N1, plus Jōyō kanji organized by school grade. You can also make your own lists to focus on the characters that matter to you.
Swipe mode helps you practice recognizing characters, their meanings, and readings. Drawing mode lets you practice writing each character with stroke guidance. Use both to build a more complete understanding.
Yes. Core kanji study works offline, so you can keep practicing on a train, on a flight, or wherever a spare moment finds you. Connected features, such as syncing devices and friends, need an internet connection.
YOUR NEXT CHAPTER STARTS HERE
Your Japanese journey has a new companion.
Free to get started. Yours to make a habit.
Stroke illustrations adapted from KanjiVG by Ulrich Apel, CC BY-SA 3.0.