Master hiragana and katakana by writing them
Reading kana is easy to start; writing them is what makes them stick. WristInk guides your finger through every stroke in the correct order, then uses spaced repetition so you review each character right before you'd forget it. Practice on your iPhone, or trace characters directly on your wrist with haptic feedback.
Features
Built for Apple Watch
Trace kana on your watch with a tap on your wrist as each stroke registers — practice anywhere, no phone needed.
Stroke-order guidance
Follow the correct stroke order for every character, the way it's actually taught.
Spaced repetition
A daily queue surfaces new kana and reviews exactly when you need them, so progress sticks.
Practice & flashcards
Switch between writing practice and quick flashcard drills to suit how you want to study.
Track your progress
See your daily streak and how many kana you've mastered at a glance.
Private by design
Everything stays on your device. No accounts, no tracking, no data collection.
How it works
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Pick a deck
Start free with the full hiragana set, then unlock katakana and voiced kana with WristInk Pro.
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Trace today's kana
Each day brings a small batch of new characters plus due reviews — on your iPhone or Apple Watch.
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Build the habit
An optional daily reminder keeps you on track until every kana is second nature.
Frequently asked questions
Do I need an Apple Watch to use WristInk?
No. WristInk works great on iPhone alone. The Apple Watch app is a bonus that lets you practice writing kana on your wrist with haptic feedback.
What's included for free?
The complete hiragana deck, writing practice, flashcards, spaced repetition, and progress tracking are all free.
What does WristInk Pro unlock?
A one-time purchase unlocks the full katakana deck along with voiced (濁音) and semi-voiced (半濁音) kana — yours to keep, forever.
Does WristInk work offline?
Yes. WristInk runs entirely on your device and needs no internet connection to practice.
Is my data collected?
No. WristInk doesn't collect personal information, doesn't track you, and keeps your practice data on your device. See our Privacy Policy for details.
Contact & support
Questions, bugs, or feature ideas? I'd love to hear from you — email is the best and fastest way to reach me.