Pygon

Privacy Policy

Effective date: 21 July 2026

Pygon is an educational app that helps students prepare for the Greek Panhellenic examinations in Mathematics. In short: Pygon does not collect, transmit, or share any personal data.

What the app stores

So that your progress is remembered between sessions, Pygon saves the following only on your device:

• Your practice attempts, answers, and scores
• Bookmarked questions and revision items
• Streaks, daily-challenge history, and exam results
• Your settings, such as theme, exam date, and chapter progress

This information never leaves your device. It is held in the app's private on-device storage (Apple's standard UserDefaults and SwiftData). The developer cannot see it.

What we collect

Nothing. Pygon has no user accounts and no login. It contains no analytics, advertising, or tracking software. The app does not connect to any server: all content — questions, lessons, and the mathematics rendering — is bundled inside the app and works fully offline.

Third parties

Pygon does not include third-party analytics, advertising, or tracking services, and does not share any data with anyone.

Children's privacy

Pygon is intended for high-school students preparing for the Panhellenic exams. Because the app collects no personal data from anyone, it collects no data from children.

Deleting your data

Because all data is stored only on your device, you can remove it at any time from within the app (Settings, then Reset progress) or by deleting the app.

Changes to this policy

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

Contact

For any questions about this policy or the app, contact Iosif Zimbidis at joseph.zimbidis@gmail.com.