Privacy Policy

The Short Version

Contrast does not collect, store, or transmit any personal data. Everything stays on your device.

Data Storage

All session data, settings, and personal records are stored locally on your device using SwiftData. No data is sent to any server, cloud service, or third party. There are no user accounts and no sign-up required.

Apple HealthKit

Contrast can save completed sessions to Apple Health as workouts, but only if you explicitly grant permission. HealthKit data is governed by Apple's privacy policy and never leaves your device through Contrast. If you deny HealthKit access, the app continues to work normally.

Contrast does not read any health data from HealthKit. It only writes workout records for sessions you complete.

Analytics & Tracking

Contrast contains no analytics frameworks, no ad SDKs, no tracking pixels, and no telemetry of any kind. We do not use any third-party services that collect data.

Network Usage

Contrast makes no network requests. The app works entirely offline. The only network activity associated with the app is through the App Store for updates.

Children's Privacy

Contrast does not knowingly collect any information from anyone, including children under the age of 13.

Changes to This Policy

If this policy changes, we will update this page with the new effective date. Since Contrast collects no data, meaningful changes are unlikely.