Official support & legal

Ring sizing, with clear support and privacy.

This is the official support and legal site for the Ring Sizer iOS app. Ring measurements and calibration data are kept on your device; Firebase is used for limited product analytics, diagnostics, and remote configuration.

Support

Calibration, purchase restoration, measurement guidance, and troubleshooting.

Open support

Privacy

See what stays on your device and what limited service data may be processed.

Read privacy policy

Terms

Understand measurement limitations, purchases, and acceptable use.

Read terms