Regen Support
About Regen
Regen reads from Apple Health to compute recovery, training load, and freshness for hybrid athletes. Available on iPhone and Apple Watch with a complication.
Common Questions
HRV shows zero even though Health.app has data.
Open iOS Settings → Privacy & Security → Health → Regen. Make sure HRV, Resting Heart Rate, Sleep, and Workouts are all enabled. Then force-quit and relaunch Regen.
Recovery score feels too pessimistic / optimistic.
Recovery is computed from HRV, RHR, sleep, and recent training load relative to your personal baseline. It needs at least 7 days of data before it will score, and around two weeks to fully stabilize. Email us if you think it's miscalibrated after that period.
What does "Freshness" mean?
Freshness is how rested your body is right now relative to recent training. High freshness = ready for hard efforts. Low freshness = recover before pushing again.
Where is sleep quality?
Sleep quality is on the verdict-first refit roadmap (Sprint VF). Currently we use sleep duration only.
The Watch complication isn't updating.
Complications refresh on the Watch's schedule. Force a refresh by opening the Watch app, then re-adding the complication. Make sure Regen has Watch app permissions.
Do I need an account to use Regen?
Yes. Regen uses Sign in with Apple (or email + password) via Firebase Auth so your data syncs across iPhone and Apple Watch and survives a reinstall. Sign in with Apple is recommended.
Does Regen send my health data to a server?
The raw HealthKit streams Regen reads (HRV, RHR, sleep stages, heart rate samples) are processed on-device and are not transmitted anywhere by Regen.
However, the data Regen derives from those streams — your daily metric summaries (HRV, RHR, sleep duration), workout sessions, morning check-ins, and training goals — is synced to your private Firebase account so it is available on every device you sign in on. We never sell your data and Regen contains no advertising trackers.
If you opt into Coach Notes (AI workout analysis), a sanitized summary of the workout is sent through our secure proxy to Anthropic's Claude API to generate the note; the raw HealthKit samples are not sent.
See privacy for the full breakdown.