Privacy Policy

RadAlert — Radar Alerts for Cyclists
Last updated: March 2026

Overview

RadAlert is a standalone Apple Watch app that connects to a Garmin Varia radar and delivers haptic alerts when vehicles approach from behind. This policy explains what data the app accesses, how it is used, and how it is stored.

Data We Collect

RadAlert does not collect, transmit, or store any personal data on external servers. All data stays on your device and, where applicable, in your personal Apple Health database.

HealthKit

RadAlert requests access to HealthKit to record cycling workouts. Specifically:

• Workout data (activity type, start time, end time, duration) is written to Apple Health only when you choose "End and Save" at the end of a ride.
• Heart rate read access is requested to enable future display of heart rate during workouts. No heart rate data is written or transmitted by this app.
• If you choose "End and Discard", no workout data is saved anywhere.

HealthKit data is stored exclusively in Apple Health on your device and is subject to Apple's privacy practices. RadAlert has no access to your historical Health data.

Bluetooth

RadAlert uses Bluetooth to scan for and connect to a Garmin Varia radar device. No Bluetooth data is stored or transmitted beyond what is needed to receive radar threat alerts in real time.

Data Sharing

RadAlert does not share any data with third parties. There are no analytics SDKs, advertising SDKs, or external network requests of any kind in this app.

Data Retention

RadAlert itself stores only one piece of data: whether you have acknowledged the safety disclaimer (a boolean flag stored locally on your Apple Watch). Workout records saved to Apple Health are retained according to your Health app settings.

Children's Privacy

RadAlert is not directed at children under 13 and does not knowingly collect data from children.

Changes to This Policy

If this policy changes materially, the updated version will be posted at this URL with a revised "Last updated" date.

Contact

Questions about this privacy policy can be sent to the developer via the RadAlert GitHub Issues page.