Mahjong Walk: Riichi Trainer
Discard quiz & tile efficiency
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Practice riichi mahjong one hand at a time.
No opponents, no timers — just a solo riichi trainer built around a single problem a day.
The steps you take become the tiles you draw, so your hand grows without you rushing it.
■ Today's Discard — one problem a day
Each morning a hand arrives. All you do is pick the tile to cut.
Once you answer, the numbers behind every candidate open up: expected value,
tile acceptance, shanten, win rate and tenpai rate.
You see why that discard was the one, and instinct turns into something you can explain.
Answer correctly and you earn bonus draws for the day's game, and your streak grows.
■ Practice Mode — sets of five
For the days you want to sit down and drill. Every question comes with an
explanation, and the ones you miss are kept for review.
■ Today's Game — steps become draws
Mahjong Walk reads your step count from iPhone or Apple Watch. 100 steps, one draw.
Start from a 13-tile hand and try to win within 30 draws.
Everyone plays the same wall each day, and when you finish you can see what others
did with it: the fastest win, the highest score, the most popular discard each turn.
There are no rankings. It is a record of the shape your day took, not a competition.
■ Also included
- History calendar: the days you walked and the days you won, at a glance
- Discard review: replay past rounds and look for the better choice
- Real-time shanten, expected value and useful tile display
- 3-Player Mahjong / Sanma (Premium)
■ Who it is for
- You want to work through discard problems a little at a time
- You want to play solo mahjong at your own pace, without waiting for opponents
- You want to learn tile efficiency with the numbers in front of you
- You want one more reason to walk
■ Premium
- +20 guaranteed draws a day, so you can still play on days you don't walk
- Redraw your starting hand up to 5 times a day
- Unlocks 3-Player Mahjong (Sanma)
- No ads
Plans: Monthly (auto-renewable) / Yearly (auto-renewable, best value) /
Lifetime (one-time payment, no renewal)
See the in-app Store screen for details.
■ About Apple Health
Mahjong Walk only reads your Steps data and never writes anything back.
Your steps are used on device only and are never sent to an external server.
■ Privacy
- All step data is processed entirely on your device
- We collect no personally identifiable information beyond your billing status
- Terms of Use: https://mahjongwalk.web.app/terms/en.html
- Privacy Policy: https://mahjongwalk.web.app/privacy/en.html
■ Contact
For bug reports or feature requests, use "Email Developer" in the More tab.
Walk, draw, and win. Turn today's steps into a hand of mahjong.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
You can now choose a tile design (Premium). Three new looks — Indigo, Cat, and Cat Noir — alongside the classic tiles. Find them under More > Tile design.
Also fixed several issues in three-player mahjong.
- You can now call kan and draw north while in riichi
- Fixed a tile being drawn twice after a kan
- Fixed discard analysis evaluating the wrong tile in hands with a kan
Thanks for reporting these.
The developer, Kyohei Hakka, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kyohei Hakka
- Size
- 134.3 MB
- Category
- Board
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
9+
- 9+
- Contains
Advertising
- In-App Purchases
Yes
- Add Draw Count Once $0.99
- Annual Premium Plan $5.99
- Monthly Premium Plan $2.99
- Lifetime Premium $19.99
- Add Draw Count Lifetime $2.99
- Copyright
- © 2026 Kyohei Hakka
