Privacy Policy

Effective date: August 25, 2026

Overview

RiichiCalc is an offline Riichi Mahjong score calculator for Android. This policy explains how the app handles data.

Data Collection

RiichiCalc does not collect, store, or transmit personal data. The app runs entirely on your device and makes no network requests. It does not use analytics or tracking.

Local Storage

RiichiCalc uses Android DataStore to save your light or dark mode and tile style settings on your device. This information stays on your device. You can remove it by clearing the app's data or uninstalling the app.

Third-Party Services

RiichiCalc does not use third-party analytics, advertising, or tracking services.

Children's Privacy

RiichiCalc does not collect any data from anyone, including children under 13.

Changes

Any changes to this policy will appear on this page with an updated effective date.

Contact

If you have questions about this policy, please open an issue on the GitHub repository.