Privacy Policy

Effective date: June 11, 2026

Overview

RiichiCalc is an offline Riichi Mahjong score calculator for Android. Your privacy is important. This policy explains what data RiichiCalc collects (or rather, does not collect).

Data Collection

RiichiCalc does not collect, store, or transmit any personal data. The app runs entirely on your device. No analytics, no tracking, no network requests.

Local Storage

The app stores your theme preference (light/dark mode and tile style) locally on your device using Android DataStore. This data never leaves your device and can be cleared by uninstalling the app or clearing app data.

Third-Party Services

RiichiCalc does not integrate with any third-party analytics, advertising, or tracking services.

Children's Privacy

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

Changes

If this policy changes, the updated version will be posted on this page with a new effective date.

Contact

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