Legal
Privacy Policy
Endurance Bytes LLC · Last updated: September 18, 2026 · Version 1.1
This policy explains how Endurance Bytes LLC (“we,” “us”), a California limited liability company, handles information for this website and for the RunCoachSync iPhone app (the “App”).
This website
The public website is a static site. Pages are self-contained: we do not load advertising, analytics, webfonts, or other third-party scripts. If you email us, or use the contact form, we receive whatever you choose to send. We use that mail only to reply, send TestFlight invites, or provide support.
The App: data we collect
RunCoachSync does not collect or transmit personal data to any server we operate. Training data stays on your device or in your private iCloud account.
The App accesses the following solely to provide its features:
- HealthKit (read only). Workouts, heart rate, resting heart rate, HRV, VO2 max, pace, cadence, and power, including Apple Watch sessions that have synced from the Workout app into Apple Health. Used to suggest workouts, match completed runs to plan days, score training targets, and compute readiness and performance figures shown in the App. Health samples are never written by the App, never used for advertising, and never sent to a server we control.
- iCloud / CloudKit. Training plans, profiles, workout drafts, and (if you buy Coach Mode pack slots) entitlement counts. Stored in your private iCloud container and shared only with people you invite.
- Notifications. Optional local reminders for upcoming plan runs and missed-run checks. These stay on device.
Data we do not collect
- We do not require a name, email, or account to use the App.
- We do not use advertising networks or analytics SDKs in the App.
- We do not sell, rent, or share your data with third parties for their marketing.
- We do not track your location.
Purchases
App Store purchases and subscriptions are processed by Apple. We do not receive your payment card details. Apple’s privacy policy applies to that transaction.
iCloud sharing
If you use Coach Mode to share a plan, the runner’s Apple ID is used to send a CloudKit invitation. Only the plan data you explicitly share is transmitted.
Retention
Deleting the App removes local data. To remove iCloud data, use Settings → [Your Name] → iCloud → Manage Storage → RunCoachSync on your device.
Children
The App is not directed at children under 13. We do not knowingly collect data from children.
Disclaimer
Training plans, pace recommendations, and fitness figures are informational. They are not medical advice or a substitute for a coach or clinician. Individual results vary.
Changes
We may update this policy. The date at the top will change. Material App changes may also require a new in-app Terms acceptance.