Privacy Policy

Crane – Posture Guard · Last updated: February 23, 2026

Crane is 100% offline. No data ever leaves your device.

What Crane Does

Crane uses your device's webcam and on-device AI (TensorFlow.js with MoveNet) to detect your posture in real time. All processing happens locally on your computer.

Data We Collect

None. Crane does not collect, store, transmit, or share any personal data. Specifically:

Camera feed — Processed in real time by the local AI model. Never recorded, stored, or transmitted.
Posture data — Calculated locally and displayed to you. Not stored beyond the current session.
Settings and preferences — Saved locally on your device in a settings file. Never sent anywhere.
License keys — Stored locally on your device. Validated locally (no server calls).

Network Activity

Crane makes zero network requests. The application functions entirely offline. There are no analytics, no telemetry, no crash reporting, no update checks (updates are handled by the Microsoft Store), and no external API calls.

Third-Party Services

Crane does not integrate with any third-party services, analytics platforms, advertising networks, or cloud providers.

Camera Access

Crane requests camera access solely for real-time posture detection. The camera feed is:

Processed frame-by-frame by the on-device TensorFlow.js model
Never recorded to disk
Never transmitted over any network
Discarded immediately after each frame is analyzed

You can revoke camera access at any time through your operating system's privacy settings.

Children's Privacy

Crane does not collect any data from any user, including children. The app is suitable for all ages.

Changes to This Policy

If we ever change this policy (for example, by adding optional cloud features), we will update this page and the date above. Any significant changes will be communicated through the app's update notes.

Contact

For questions about this privacy policy, contact us at: mircea.chiriac@outlook.com