Product support
Photo scan, hand analysis, subscriptions, and troubleshooting answers in one place.
Riichi strategy, made legible
Read the hand. Learn the why.
Mahjong Jussei is a trilingual Riichi mahjong learning app for hand practice, tile-efficiency signals, and explainable strategy guidance.
One clear signal
Help without the guesswork.
Find product answers, understand how your data stays on device, or contact us directly.
Privacy
No account, no advertising SDK, and no automatic photo upload in the current release.
Fair play
Built for learning and casual practice—not gambling, tournament assistance, or guaranteed wins.