Flex Support

Need help with the app? Email [email protected] and we'll get back to you quickly.

Common questions

• Where can I use Flex? On the web at flex.attereon.com, on iPhone and iPad from the App Store, and on Android from Google Play. Companion apps for Apple Watch and Wear OS run a session on your wrist and feed heart rate back to the phone.
• Do I need an account? No — you can generate and run workouts as a guest. An account (free, through Attereon) adds saved plans, history, stats, and cross-device sync.
• How do I resume a paused workout? Paused sessions can be resumed from the home screen banner for 16 hours.
• Where are my stats? The Stats tab shows volume, personal records, and muscle heatmaps once you've logged workouts.
• No trainer audio? Check the audio card on the session start screen — a trainer voice must be selected (not muted) and your device not in silent mode.
• Heart rate or calories missing from a session? Health sync is off until you turn it on in Settings. On iOS it needs Apple Health permission (Health app → Sharing); on Android it needs Health Connect permission (Settings → Apps → Health Connect → App permissions). Heart rate only appears when a watch was worn during the session.
• What can my trainer see? Once you join a trainer and they approve you: your completed sessions and logged sets, personal records, your training profile, and session comments. Heart-rate and calorie summaries only if "Share health data with my trainer" is on. Body weight, height, birth year, and sex are never shown. Details in the privacy policy.
• Export my data? Settings → Export gives you your training log (every logged set) as CSV. For a full copy of your data, including sessions with health summaries, body-weight readings, and your profile, email us from your account's address.
• Delete my account? Settings → account options in the app (type your username to confirm), or email us from the address above with your username. Deletion is permanent and removes your Flex profile and everything stored under it; your Attereon account is not affected.

Learn

Training guides and FAQs live at flex.attereon.com/learn.