TeraWatt Privacy Policy

Last updated: February 22, 2026

Overview

TeraWatt is an offline puzzle game developed by Keith ("we", "us", or "our"). We are committed to protecting your privacy. This policy explains what data the app does — and does not — collect.

Data Collection

TeraWatt does not collect, store, or transmit any personal data.

• No account or sign-in is required.
• No advertising networks are used.
• No device identifiers, IP addresses, or hardware fingerprints are collected.

Anonymous Analytics

TeraWatt sends anonymous usage events (such as "puzzle completed" and "app launched") to Azure Application Insights to help us understand how players use the game and improve the experience. These events contain:

• A random session ID that is regenerated each time you open the app (not persisted or linkable across sessions)
• Game-related data: difficulty level, star rating, solve time, and grid size

These events do not contain:

• Device identifiers, advertising IDs, or hardware fingerprints
• IP addresses (masked/zeroed server-side before storage)
• Names, email addresses, or any account information
• Location data

You can disable anonymous analytics at any time in Settings > Privacy > Anonymous Analytics. When disabled, no data is sent.

Local Data

All game data — including puzzle progress, scores, settings, and cosmetic purchases — is stored locally on your device using Android's standard SharedPreferences and Room database. This data never leaves your device.

Third-Party Services

TeraWatt uses Azure Application Insights (operated by Microsoft) solely for anonymous analytics as described above. No other third-party services, SDKs, or APIs are integrated. Microsoft's privacy policy is available at privacy.microsoft.com.

Children's Privacy

TeraWatt does not collect any personal information from anyone, including children under 13. The app is suitable for all ages.

Changes to This Policy

If we ever update this privacy policy, the revised version will be posted on this page with an updated date.

Contact

If you have questions about this privacy policy, you can reach us by opening an issue on our GitHub repository.