
A self-drawn hand, East round, East seat
Tap the tiles from the palette and mark the winning tile. The round wind, seat wind and self-drawn or discard are set with the buttons above. Flowers are tapped in at the bottom.

Tensu Navi scores a winning hand from the tiles you pick: every fan, tai or yaku, the total, and what each player pays. Five rule sets in one app, all calculated on your phone.


Follow a single Chinese Official hand from the tile palette to the payments.

Tap the tiles from the palette and mark the winning tile. The round wind, seat wind and self-drawn or discard are set with the buttons above. Flowers are tapped in at the bottom.


Pure Straight 16, Fully Concealed Hand 4, All Chows 2, Pure Double Chow 1, One Voided Suit 1: 24 points, above the 8 needed to win. Every fan is listed with its value.

The result lists the other players by seat (left, across, right) and what each pays. Here every one pays 32, the 24 points plus the base of 8, so you receive 96.

Choose another rule set on the start screen and the same palette counts fan, tai or yaku instead. Japanese riichi comes in 4-player and 3-player.

* Every screen shown is the actual Tensu Navi app, with a sample Chinese Official hand.
Tensu Navi lets you match your table.
Hong Kong has association tournament rules and house rules that disagree on points such as the cap and the half-spicy table. Taiwanese tables differ on the base, the tai and dealer streaks. Japanese 3-player has its own variants. So each rule set comes with presets and individual settings, and the result screen says which rules it used.
Calculated on the device. No sign-in, and we have no server. Usage measurement never includes tile arrangements or the names of fan.
Chinese Official (81 fan), Hong Kong (13 tiles), Taiwanese (16 tiles) and Japanese riichi in 4-player and 3-player. Each has presets and settings for your table.
Free, with no limit on calculations and no registration. Ads are shown (at the bottom of the screen and when you close a result). There are no in-app purchases.
What it can't do Scoring differs between tables and venues, and rules that are not in the settings cannot be matched. Compare the rules shown on the result with your table. A hand that cannot win under the rules (no yaku, or under 8 points in Chinese Official) cannot be scored. The Hong Kong house rules and both Taiwanese presets are unofficial.
You can choose the tsumo-loss type, the no-tsumo-loss type (for example child 1 : dealer 2), whether to count fu, how North is treated, honba points and more. Common combinations can be switched at once from presets.
Yes: Hong Kong mahjong (13 tiles, with or without flowers), Taiwanese mahjong (16 tiles, with dealer streak tai) and Chinese Official mahjong (81 fan, 8 points to win). Finer rule differences can be chosen in the settings.
Japanese, English, Korean and Chinese (Simplified and Traditional). It follows your phone's language setting.
No. Calculation happens on your phone and works without a connection. We have no server.
Pick the hand from the tile palette, switch to Chi, Pon or Kan for called sets, and finally choose the winning tile. Set the round wind, seat wind, riichi and tsumo or ron, then tap Calculate.
Points can change with the rules. The result screen shows the rules used at the top. Please check them against the rules at your table.
It is free, with no limit on use and no registration. Ads are shown (at the bottom of the screen and when you close a result). There are no in-app purchases.
Every fan and every payment, for the rules you play. All on your phone.
Android (iOS coming soon) · Ages 13+ · Contains ads
Google Play (coming soon)