CycleHUDPrivacy Policy
Last updated: 24 June 2026
CycleHUD ("the app") is a cycling heads-up display for iPhone and Apple Watch. This policy explains what the app accesses and how that information is used. The short version: your data stays on your device and in Apple Health. CycleHUD has no servers and collects nothing about you.
Information the app accesses
CycleHUD uses the following, only on your device and only to provide its features:
- Location (GPS) — to measure ride speed, distance and your route, and to include the route in the workout saved to Apple Health. Location is used while you are using the app (including during a ride in the background) and is never sent off your device by CycleHUD.
- Motion & Fitness — the barometric altimeter is used to measure elevation gain (ascent) during a ride.
- Bluetooth — to connect to your rear radar and to standard speed/cadence sensors and read their data.
- Health (HealthKit) — with your permission, the app reads heart rate (from a paired Apple Watch) to estimate calories, and writes cycling workouts (distance, duration, active energy and GPS route) to Apple Health. You can grant or revoke these permissions at any time in the Health app or iOS Settings.
What we do not do
- No user accounts and no sign-in.
- No servers — CycleHUD does not send your data anywhere.
- No analytics, advertising, tracking, or third-party SDKs.
- We do not sell, rent, or share your personal information with anyone.
Where your data lives
Ride summaries (including the route and where vehicles were detected) and your settings are stored locally on your device so you can review past rides in the app. Workouts you choose to save are also stored in Apple Health, which is governed by Apple's Privacy Policy and is under your control. Data shared between your iPhone and Apple Watch travels only over Apple's encrypted device-to-device connection.
Data retention & deletion
Because the data lives on your device, you remain in control of it. You can delete individual rides from the Previous rides list in the app, remove saved workouts in the Apple Health app, and delete everything the app stores by deleting CycleHUD from your device.
Children
CycleHUD is not directed at children and does not knowingly collect information from children.
Changes to this policy
If this policy changes, the updated version will be posted on this page with a new "last updated" date.
Contact
Questions about this policy or the app? Contact: paul@treadgame.com.