Play mahjong by your rules.
Take a photo of your tiles and the hand is scored in a second — in the exact ruleset your table plays. Then keep the game going against intelligent AI or friends online.
One photo · one second · the right score · every ruleset, including yours
Step 01 — Your rules
Every ruleset you know — plus the one your table plays.
Taiwanese, Hong Kong, Chinese Official, Riichi, American — all built in and ready to play. Bring your own house rules and He Fen learns them, scores them, and plays them right alongside the classics.
- Taiwanese
- Hong Kong
- Chinese Official
- Riichi
- American
- House rules
Upload your rules PDF → your table's game is ready in minutes.
Step 02 — One photo, instant score
Just take a picture.
No manual entry. No score sheets. No second-guessing. One photo and the entire hand is laid out for everyone — tile by tile, point by point.
- 1
Snap your tiles
Lay out the hand. One clear photo is all it takes.
- 2
AI reads the hand
Every tile is identified and every set is named, live on screen.
- 3
Instant score
A clear, point-by-point breakdown the whole table can review.
Step 03 — AI you can trust
See it. Score it. Trust it.
Our on-device AI identifies every tile, names every pattern, and counts every point against the active ruleset — instantly, consistently, and without debate. No missed points. No miscounts. No disputes.
99%+
Tile detection
99%+
Scoring accuracy
Step 04 — Play anywhere
Play solo or with your crew.
Need a fourth player? Face AI opponents tuned to challenge you. Playing across the world? Invite friends and deal in seconds. Same tiles, same rules, same table feel — wherever you are.
Ready to play?
Download He Fen Mahjong free and let your next hand speak for itself. No more score sheets, no more uncertainty — just the game you love, played your way.