Last Updated: October 11, 2025

1. Information We Collect

StatTree stores only your coding platform username locally on your device.

We do not collect, transmit, or store any personal information, passwords, or private data on external servers.

2. Data Storage

• Your username is stored locally on your device using iOS UserDefaults.
• No data is transmitted to or stored on any external servers.
• All statistics and problem data are fetched directly from the platform’s public API.

3. Third-Party Services

StatTree uses a third-party coding platform’s public GraphQL API to retrieve publicly available information, such as:

• Profile details
• Problem statistics
• Contest performance

Please refer to the coding platform’s own privacy policy for details on how they handle user data.

4. Data Security

We take security seriously:

• All network communications are secured using HTTPS encryption (managed by iOS).