Riichi Calc - Japanese Mahjong

Name: Riichi Calc - Japanese Mahjong
Rating: 4.125 (405 reviews)
Author: Richard L

By: Richard L App

Takes any valid Japanese mahjong hand and calculates all winning combinations.

Overview

Google Play Store

Downloads

121,751 ▲ 187

Data as of 2026-08-04

Rating:

4.13 −1

(405)

Version:

2.3.9

Last updated: 2025-10-20

Ranking

#198,685 ▼ 227

Overall

Features & Capabilities

Riichi Calc is a user-friendly Chrome extension designed specifically for players of Japanese Mahjong. It simplifies the game by taking any valid hand and computing all possible winning combinations, helping players to strategize effectively. The app automatically rearranges tiles, determines waits for tenpai hands, and provides warnings for illegal plays such as riichi with an open hand. Users can input han and fu values to accurately calculate points and can toggle terminology between English and romanized Japanese. This tool is an indispensable aid for both beginners and seasoned mahjong enthusiasts seeking to enhance gameplay analysis and accuracy.

User Growth & Download Statistics

App Games

By:

Downloads:

Rating:

Version:

2.3.9 Last updated: 2025-10-20

Version code:

Creation date:

2013-09-06

Publisher country:

Permissions:

com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_ADSERVICES_TOPICS Low risk
android.permission.FOREGROUND_SERVICE Low risk
android.permission.INTERNET Low risk
android.permission.WAKE_LOCK Low risk
android.permission.ACCESS_NETWORK_STATE Safe
ric.ov.RiichiCalc.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Size:

3.47MB

Email:

ri*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-08-04

Compare stats and ranking:

Ranking

# 198,685 ▼ 227

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Richard L

Google Play Store

https://play.google.com/store/apps/details?id=ric.ov.RiichiCalc

Email:

ri*****@gmail.com

Website:

https://lrih.github.io/

User Reviews

Riichi Calc is praised for easy, beginner-friendly scoring and reliable calculations, with responsive support. However, ads, a confusing swipe-based UI, and missing features (ron/tsumo, pinfu, rinshan, local rules) are common complaints. Occasional errors like 'invalid hand' also occur. Overall, it's a strong learning and scoring tool, but UX, ad experience, and feature gaps are the main recurring issues.

Pros

Easy to use and straightforward for calculating Riichi scores.
Beginner-friendly, helping players learn scoring quickly.
Provides reliable score calculations when you enter hand and conditions.
Useful for identifying Yaku and understanding scoring in Japanese Mahjong.
Responsive developer with quick bug fixes and good support.

Cons

Ads are intrusive and there is no easy way to remove them.
UI/UX is confusing, with important options moved behind swipes and lacking visual cues.
Missing essential features like specifying ron vs tsumo, pinfu yaku, rinshan after kita, and support for local variants.
Occasional reliability issues like 'invalid hand' errors and other bugs.
Some users report a previously available tab or access path to settings being hidden or removed.

Recent reviews

ad blocks top tab that is important for scoring calculations

ed*****, 2026-07-10

very useful for quickly calculating the score of a hand and identifying yaku patterns. the design is bare but I suppose that doesnt matter so much. my main gripe is that the settings menu is missing some things that could improve the usability of the app and also the calculation results are sometimes difficult to parse. I wish it would more clearly indicate what is being scored. Especially for new players trying to learn the yaku+scoring (who i imagine to be the primary audience of this app)