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Minna de Mahjong
Privacy Policy
This page explains how user information is handled in Minna de Mahjong (the “App”).
1. Summary
The App neither collects nor transmits any user information. We operate no servers, and gameplay never uses the internet. All settings are stored only on your own device.
Only in-app purchases (the full version) are processed by Google Play and the App Store. Payment details are handled by those stores; we never receive them.
2. Information stored on your device
The App stores the following only on your own device. None of it is ever sent anywhere.
| What is stored | Purpose |
|---|---|
| Your username (if you set one) | To show your name on the game screen |
| A per-device identifier (a randomly generated value) | To return you to the same seat if the connection drops |
| Rule settings (red dora, kuitan and so on) | To keep the same settings the next time you play |
| Whether the full version was purchased (yes / no only) | To enable the features you purchased |
All of this is deleted when you uninstall the App. The per-device identifier is a random value the App generates locally; it has no relation to advertising IDs or hardware device IDs. It cannot be used by other apps or by third parties to track you.
3. Communication with nearby devices
Only when you choose the “play together” mode does the App communicate directly with nearby devices over Bluetooth Low Energy. In that case, the only data sent to the others at your table is what the game itself requires:
- Your username, if you set one (nothing is sent if you did not)
- The per-device identifier described above (to restore your seat)
- Information about the progress of that game, such as dealt tiles, discards and scores
This is direct device-to-device communication. It does not pass through our servers or any third-party server, and its contents are never recorded or stored.
4. Permissions
| Permission | When it is used |
|---|---|
| Bluetooth (scan / advertise / connect) | To play with nearby devices |
| Location (Android 11 and below only) | Not used to determine your location. On Android 11 and below, the operating system requires this permission in order to discover Bluetooth devices, which is the only reason it is declared. It is not declared on Android 12 and above |
| In-app purchases (billing) | To purchase and restore the full version |
| Internet access and network state | Not used for gameplay. Required by the store’s own purchasing mechanism |
5. Disclosure to third parties
We do not provide user information to third parties. No advertising or analytics components are built into the App.
In-app purchases use only the Google Play and App Store mechanisms. The purchase is carried out by those stores, and we receive no information that could identify the purchaser. Only whether a purchase was made remains on the device. Handling of information by the stores themselves is governed by their respective privacy policies.
6. Use by children
The App is not directed at any particular age group. Because it does not collect user information, no personal information is collected when children use it either.
7. Changes to this policy
If the content changes, we will update this page.
8. Contact
High Tune
hightunegame@gmail.com