AI Co-Pilot · Every Ruleset

Never wonder
what to discard.

Point your camera at your rack. Get an instant, hand-by-hand strategic recommendation — built for Cantonese, Riichi, American, and six more rulesets.

Start scanning free See how it works
Works offline as a fallback 8 regional rulesets No account required
Mahjong Strategy Assistant showing an AI-recommended strategy with keep and discard tiles highlighted
45% match Live probability on your current hand
Real-time Recalculates after every discard
Traditional Chinese · Base points & doubles Hong Kong Old Style · Faan scoring Riichi · Han / Fu / Furiten American NMJL · Card-based hands Taiwanese 16-Tile · Tai calculation Singapore · Tai with caps Malaysian · 3-player, bombs Vietnamese · Phán / Mún Traditional Chinese · Base points & doubles Hong Kong Old Style · Faan scoring Riichi · Han / Fu / Furiten American NMJL · Card-based hands Taiwanese 16-Tile · Tai calculation Singapore · Tai with caps Malaysian · 3-player, bombs Vietnamese · Phán / Mún
What it does

One rack photo. A full strategic plan.

Every screen below is the actual app — not a mockup. This is what you'll see the first time you scan.

01 — Rack Analyst

Snap your tiles, get your target hand.

The AI reads your rack from a single photo, identifies the highest-probability hand you can complete, and shows exactly which tiles to keep versus discard — with the reasoning spelled out, not just a black-box answer.

Camera scan Auto-recommend Manual tile entry
Rack Analyst screen showing tile rack and rules selector
02 — Step Advisor

Strategy that explains its own thinking.

Rather than a plain "discard this" prompt, you get a full strategic brief — the target hand, the calling rule that applies to it, and a keep/discard rack laid out visually so you can check its logic against your own instincts.

Explained reasoning Rule-aware Visual rack guide
Step Advisor showing Little Three Dragons target strategy with keep tiles highlighted
03 — Board Evaluator

Track what everyone else has thrown away.

Log opponents' discards, displayed pungs, and kongs — the AI folds every dead tile into its probability math, so its recommendation reflects what's actually still available in the wall, not just your own rack.

Discard photo scan Live probability Dead-tile aware
Board Evaluator screen with discard area scanner and manual tile adder
04 — Table Scorer

Point the camera at the winning hand. Get the score.

Photograph the completed hand and the app identifies every meld, flags anything it's unsure about for you to confirm, and calculates the exact payout — in whichever of the eight rulesets your table plays by.

AI camera referee 8 rulesets Manual calculator fallback
Table Scorer showing ruleset selector and live classical score calculation
05 — Score Sheet

Run the whole table, not just one hand.

A running tournament tracker for four players — dealer rotation, self-draw versus discard payouts, and a live cash ledger, all updating automatically as each hand is logged.

4-player tracking Auto dealer rotation Live standings
Score Sheet showing tournament standings table and hand logging form
06 — Points Calculator

Every rule, every wind, laid out to tweak.

For when you want to work the numbers yourself: pungs, kongs, wind pairs, dragon doubles — each parameter has its own stepper, with the live score and cash payout recalculating as you adjust it.

Manual override Seat & round wind Fan-Laak or traditional split
Points Calculator showing environment and stakes settings with meld set steppers
One app, every table

Eight rulesets. Same rack.

Switch styles mid-session — the AI's recommendation and every score calculation update instantly to match.

ChinaTraditional Chinese
Hong KongOld Style (Faan)
JapanRiichi
USAAmerican (NMJL)
Taiwan16-Tile
SingaporeTai + Caps
Malaysia3-Player
VietnamPhán / Mún
Scan Credits modal showing balance and purchase option
Fair by design

Watch an ad, or skip them entirely.

Every scan costs one credit. Earn 5 free credits by watching a single rewarded ad, or buy 100 scans ad-free for a one-time $1.99. No subscriptions, no surprise charges — and credits never expire.

There's no way to farm free credits by clearing app data either — your balance is protected the same way whether you're on WiFi or off the grid at your local club.

Pricing

Start free. Pay only if you want to.

Free

Watch & Play

$0
5 scan credits per rewarded ad
  • ✓ Full access to all 8 rulesets
  • ✓ Rack Analyst & Step Advisor
  • ✓ Score Sheet & Points Calculator
  • ✓ Unlimited manual tile entry
Get started
One-time

100 Scan Pack

$1.99
No ads, no subscription, never expires
  • ✓ 100 ad-free camera scans
  • ✓ Everything in Watch & Play
  • ✓ Credits stack with earned ones
  • ✓ One purchase, use anytime
Buy scan pack
Questions

Good to know

Do I need to photograph everyone's hand to get a score?

No — for standard scoring you only need a photo of the winning hand. Mahjong scoring evaluates just the winner's tiles against the active wind conditions; opponents' concealed tiles don't factor in. Scanning the full table is only needed for board-layout detection or live coaching.

What happens if the AI misreads a tile?

Every detected meld shows a confidence flag, and you can tap any tile to correct it before scoring — the app never locks in a result you haven't confirmed. If a whole photo comes out unclear, it'll suggest retaking it in better lighting.

Does it work without an internet connection?

Core scoring and manual calculators work fully offline. Camera-based scanning needs a connection to reach the AI, but falls back to an honest "unavailable offline" message rather than guessing — it never fabricates a result.

Can I switch rulesets mid-game?

Yes. Switching rulesets recalculates your current recommendation and any in-progress score immediately, so you can settle a rules debate at the table without restarting anything.

Your rack is waiting.

Free to start, no account needed. Scan your first hand in under a minute.

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