Tengan: Riichi Mahjong Coach
Replay hands on the real wall
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
The whole wall is revealed after every hand. Replay "what if I had kept that tile?" or "would that cut have dealt in?" on the real wall. Rank up against CPUs.
Tengan is real Japanese riichi mahjong that reveals the whole wall after every hand, so you can replay "that one discard" on the real wall and get stronger.
--- Look back with what-ifs ---
- After each hand, the whole wall is revealed, including the tiles you would have drawn
- Pick one of your discards to see your hand and who was in tenpai, and on what wait, at that moment
- Pick another tile from that hand to replay the real wall as if you had cut it: would you have dealt in (to whom, for how much), reached tenpai, or won?
- Or play on from that spot yourself on the same wall. The others cut the same tiles they really did
- When you missed a win, the result screen shows it in one line: "keeping that tile would have won 8000"
- Luck and decisions: compare your starting hand and draws with expectations, and each discard with the most efficient choice
--- See yourself improve ---
- Climb the ranks in CPU games, from 10 kyu up to 10 dan
- Stats: average placement, win rate, deal-in rate and your play style
- Which tile?: a daily problem and problems from spots where you hesitated, each with an efficiency breakdown
--- CPU games ---
- East-only or East-South games, three CPU strengths. Strong CPUs push and fold
- Rules such as open tanyao, red fives and rounding up to mangan
- Yaku, fu and points are all calculated automatically with a full breakdown
- Hints for shanten and waits help first-time players
- Play in portrait or landscape
--- Play with friends too ---
- Gather with one room code. No sign-up needed
- Empty seats are filled by CPU players, so two or three people can start
- The server deals and judges; other players' hands and the wall are never sent to your device
- The app checks that the revealed wall is the same one the hand started with. In friend rooms every device contributes randomness to the wall, so not even the operator can arrange it
--- About Tengan Plus (subscription) ---
Tengan Plus is an optional auto-renewing subscription (in-app purchase, monthly or yearly plan).
- No ads
- Every table style
- Unlimited problem book
- Unlimited what-ifs
- Stats analysis (strengths, areas to improve, recent placements)
Table styles are cosmetic only and never affect strength or the tiles you get.
--- Other in-app purchases ---
- Remove Ads (one-time purchase): removes ads only, forever.
- What-If Tickets (5 or 30 opens): one what-if per round is free; tickets open more. You can also open up to 3 per day by watching a video ad.
- Price: shown in the app before purchase and varies by country or region. Payment is charged to your Apple ID account at confirmation of purchase.
- Auto-renewal: the subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period.
- Cancel: you can't cancel from inside the app. Go to Settings > your name > Subscriptions on your device. Cancellation takes effect at the end of the current period; there are no refunds for partial periods.
- Restore: if you purchased before, tap "Restore purchases" at the bottom of the Tengan Plus screen.
- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Privacy Policy: https://tomople.com/privacy-policy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed the hint line overlapping your name plate when the Riichi or call buttons appear
- Fixed the rank badge text overflowing in English
The developer, tomople, 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:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- tomople
- Size
- 78.7 MB
- Category
- Board
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
13+
- 13+
- Infrequent
Simulated Gambling
Contains
Advertising
User-Generated Content
- In-App Purchases
Yes
- What-If Tickets x30 $4.99
- Remove Ads $5.99
- What-If Tickets x5 $0.99
- Tengan Plus Monthly $1.99
- Tengan Plus Yearly $17.99
- Copyright
- © 2026 Tomoyasu Hidaka
