JongBook: Mahjong Score Sheet
Riichi score sheet & stats
Free · In‑App Purchases
The paper score sheet from the mahjong parlor, now on your phone.
Just enter the scores and JongBook calculates everyone's net results for you. No more pen, paper, or calculator for your Riichi mahjong nights.
[Enter scores, get results automatically]
- Enter each hanchan's score and net results are calculated automatically
- Chip and table fee rules are all included, so you know the net results the moment you finish
- Supports both 3-player (sanma) and 4-player mahjong
- Looks just like a paper score sheet, so it's easy to pick up
[Manage your regular players in groups]
- Add the people you play with to a group and create a score sheet with one tap
- Pick "same players as last time" and start right away
- Rules are saved per group, so you don't have to enter them every time
[Share score sheets with friends]
- Invite friends to a group with a link and share its score sheets
- Everyone sees the same stats on their own phone, anytime
- Export results as an image and send them through any messaging app
[Stats tallied automatically]
- Group stats are ranked automatically, so you can see who's winning at a glance
- My Stats brings together your results across all groups: totals, trend, placement, and how you do against each opponent
- Switch between net and score, and filter by period or 3-player / 4-player
- JongBook Pro unlocks even deeper analysis
- Net trend (cumulative chart)
- Placement breakdown, average placement, and 1st rate
- Head-to-head (who is strong against whom)
[Great for]
- Regular home games with friends or coworkers
- Anyone tired of paper score sheets and adding everything up by hand
- Players who want to keep a proper record of their results
- Groups who like a little friendly competition on the leaderboard
[JongBook Pro (monthly / yearly)]
- Create unlimited groups (free: 1. Groups you joined by invitation don't count)
- Save unlimited score sheets per group (free: 10)
- See every chart on the stats screen
- No ads
* Score sheets without a group can be created for free without limit
* After reaching a limit, you can still view and edit all of your existing records
JongBook is made by an independent developer. Feedback and requests in the reviews are always appreciated!
Terms of Use: https://ryoyoshi29.github.io/mahjong-score-sheet-support-page/en/TermsOfUse.html
Privacy Policy: https://ryoyoshi29.github.io/mahjong-score-sheet-support-page/en/PrivacyPolicy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
[What's New]
Improvements
- When you close a score sheet you finished in first place, you'll now see a congratulations along with an introduction to JongBook Pro
- Changed the title of the Home screen to "Home"
Thanks for using JongBook! It's made by an independent developer, so a review would mean a lot.
The developer, ryo yoshitsugu, 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:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ryo yoshitsugu
- Size
- 7.9 MB
- Category
- Finance
- Compatibility
Requires iOS 17.4 or later.
- iPhone
Requires iOS 17.4 or later. - iPad
Requires iPadOS 17.4 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
9+
- 9+
- Infrequent
Mature or Suggestive Themes
Contains
Advertising
- In-App Purchases
Yes
- JongBook Pro (Yearly) $50.99
- JongBook Pro (Monthly) $6.49
- Copyright
- © 2026 Ryo Yoshitsugu