Euclid — Mental Math Training
Effective date: April 12, 2026
Euclid does not collect, store, or share any personal data. Period.
Euclid runs entirely on your device. The app does not connect to any server, does not require an account, and does not use any analytics or tracking frameworks. No personal information, usage data, or device identifiers are collected — ever.
Your game sessions, statistics, and settings are stored locally on your iPhone using Apple's on-device storage (SwiftData). This data never leaves your device and is not accessible to us or any third party.
Euclid does not integrate any third-party SDKs, advertising networks, or analytics services. There are zero external dependencies.
Because Euclid collects no data whatsoever, it is safe for users of all ages. The app complies with COPPA and other applicable children's privacy regulations by design.
If this policy is ever updated, the changes will be posted on this page with a revised effective date. Since the app collects no data, meaningful changes are unlikely.
If you have any questions about this privacy policy, you can reach me at thomasforget@live.fr.