App Name: MCR Mahjong Tutor (中国麻雀トレーナーMCR)

Operator: tonico

Last Updated: 2026-05-26

1. App Information

MCR Mahjong Tutor (中国麻雀トレーナーMCR) is an offline learning and practice app for Chinese Mahjong (MCR rules), developed and operated by tonico.

The app is designed to help users learn the rules of MCR (Mahjong Competition Rules) and practice at their own pace, entirely on their device. No internet connection is required to use the app.

2. Contact

For any questions, feedback, or issue reports, please contact us by email:

Support Email: [email protected]

This is the only official support channel for MCR Mahjong Tutor.

3. What You Can Contact Us About

You are welcome to contact us for any of the following:

• Bug reports or unexpected behavior
• Questions about app features or MCR rules covered in the app
• Feature suggestions or feedback
• Questions about privacy or data handling
• Any other concerns related to the app