YOUR JAPANESE JOURNEY, A LITTLE BRIGHTER

Little by little.
Kanji by kanji.

That beautiful, complicated world of Japanese?
It’s closer than you think. Swipe, draw, and discover
a little more every day with Kanji Koi.

Free to get startedMade for your pace
Meet your new learning companion
Kanji Koi’s friendly orange koi mascot
A little betterevery single day.
A moment of discovery
JLPT N501 / 044 strokes
Do you know this kanji?

A familiar shape.
A new connection.

A tiny preview of your next favorite habit.
Small steps. Real progress.

From your first kanjito your next big breakthrough

Two ways to make it stickSwipe to remember. Draw to understand.

N5 N1

Room to keep growingEvery stage of your JLPT journey

A LITTLE CURIOSITY GOES A LONG WAY

Less memorizing.
More understanding.

Go beyond remembering a shape.
Discover its meaning, find its story,
and make it part of your world.

MAKE THE CONNECTION

Every character.
A whole new story.

Readings, meanings, radicals, and historical forms. Get to know the kanji behind the strokes.

Discover your first kanji
好きになる、日本語。Kanji Koi widget showing 愛, the kanji for love and affection, with its Japanese readings A little love for learning
SEE HOW FAR YOU’VE COME

Small moments.
Visible progress.

Watch your practice add up, one character and one day at a time.

Your learning, in color
An example of the app’s activity widget, with rounded orange squares showing daily practice
Every little bit counts.Less More

Get a feel for every stroke.

Follow guided strokes, practice by hand, and turn unfamiliar shapes into something natural.

Make room for your favorites.

Create your own lists, save characters you love, and add notes that make them yours.

Take your curiosity anywhere.

On the morning train or off the beaten path. Your core study tools work offline, too.

A HABIT THAT FEELS LIKE YOU

Find your flow.
Enjoy the journey.

No perfect routine required.
Just a little space for something you love.

Let’s start learning
01

Follow your curiosity.

Pick your JLPT level, explore school-grade kanji, or build a list inspired by your everyday life.

02

Swipe it. Draw it. Know it.

A quick moment for flashcards or a slower one for writing. Find the practice that fits your day.

03

Come back a little stronger.

See your progress grow, revisit tricky characters, and celebrate the things that finally click.

Make yourself at home.
A little more you.

A lot to look forward to.

Happy Koi

YOUR WORLD, YOUR COLORS

Serious about kanji.
Playful about everything else.

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 little inspiration
for your next chapter.

Visit the learning journal

A FEW THINGS YOU MIGHT BE WONDERING

Curious?
You’re in good company.

Here’s a little clarity before
your first character.

Is Kanji Koi free to use?

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.

Can I start as a complete beginner?

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.

Which JLPT levels can I study?

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.

What is the difference between Swipe and Draw?

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.

Can I practice offline?

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

A little today.
A whole new world tomorrow.

Your Japanese journey has a new companion.

Free to get started. Yours to make a habit.
Your Kanji Koi companion is ready to learn with you

Stroke illustrations adapted from KanjiVG by Ulrich Apel, CC BY-SA 3.0.