# Mahjong Shanten Calculator — Shanten & Improving Tiles

> Shanten & Improving Tiles (iPhone/iPad app by kensuke ueda.)

- Source: https://appshunter.io/ios/app/mahjong-shanten-calculator/id961845391 (this page in markdown: same URL + `.md`)
- Developer: [kensuke ueda](https://appshunter.io/developer/961845390)
- Category: Games
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Japanese, Chinese (Traditional, Taiwan)
- Released: 2015-02-20
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/mahjong-shanten-calculator/id961845391/reviews.md

## What is Mahjong Shanten Calculator?

Mahjong Shanten Calculator compares every possible discard from a 14-tile Japanese mahjong hand.

See which discard keeps the lowest shanten number, which tiles improve the hand next, and how many copies of those tiles remain.

FEATURES

• Enter characters, circles, bamboo, and honor tiles with a tap
• Compare all discard candidates with the best shanten number
• View improving-tile types and the total number of copies remaining
• Evaluate standard hands, seven pairs, and thirteen orphans together
• Calculate instantly and entirely on your device

USE IT TO

• Review alternative discards after a game
• Check the ukeire for a mahjong puzzle
• Compare a standard-hand route with seven pairs
• Practice tile efficiency as a Japanese mahjong learner

No account, ads, analytics, or network connection is required.

Improving tiles are calculated from the 14 tiles in your hand only. Visible discards, called tiles, yaku, score, turn number, safety, and other players' hands are not considered. Use the results as a tile-efficiency study aid rather than a complete in-game decision.


## Version history (last 4 releases)

### 1.2 — 2026-08-01

Added English and Traditional Chinese.
The interface, instructions, and calculation results now follow your device language.

### 1.1 — 2026-07-29

iOS 17以降に対応し、牌効率計算を一から作り直しました。
通常手・七対子・国士無双のシャンテン数と、打牌ごとの有効牌・受け入れ枚数を見やすく比較できます。

### 1.0.1 — 2015-02-27

This update from Apple will improve the functionality of this app. No new features are included.

### 1.0.0 — 2015-02-20

No release notes.

## More apps by kensuke ueda

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- [Caffeine mg: Half-life Tracker](https://appshunter.io/ios/app/caffeine-mg-half-life-tracker/id6763047063)
- [Saketracker: Alcohol log](https://appshunter.io/ios/app/saketracker-alcohol-log/id6763330832)
- [Carmemo - Vehicle service log](https://appshunter.io/ios/app/carmemo-vehicle-service-log/id6763827908)
- [ContentNest: Site & App Block](https://appshunter.io/ios/app/contentnest-site-and-app-block/id6766147372)

All apps by kensuke ueda: https://appshunter.io/developer/961845390

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*