Support

You enter your FTP during setup, and you can change it any time in Settings › FTP. Not sure what it is? Ride the free Ramp Test — when you finish, YourIntervals suggests a new FTP from your result.

An iPhone with iOS 17 or later and a Bluetooth smart trainer that supports FTMS with ERG control. A heart-rate sensor is optional. You can also ride any workout without a trainer — the app then shows targets only and doesn't control resistance.

Not at the moment. YourIntervals is built for iPhone.

• Make sure the trainer is powered and not connected to another app (Zwift, Wahoo, TrainerRoad, a bike computer…). Most trainers accept only one controlling connection.
• Allow Bluetooth for YourIntervals in iOS Settings › YourIntervals.
• Pedal briefly to wake the trainer, then open Settings › Smart trainer again.
• Update the trainer's firmware with the manufacturer's app — some trainers only enable FTMS after an update.

Another app is holding control of the trainer. Close that app (or disconnect it in your bike computer's sensor settings), then tap Retry. Settings › Connection diagnostics shows whether your trainer supports target power and whether each command was acknowledged.

The workout clock is put on hold with a clear warning. YourIntervals reconnects automatically, takes control again and resends the current target — then the workout continues where it stopped.

Put on your strap (or enable heart-rate broadcast on your watch), then choose it under Settings › Heart-rate sensor or on the connection screen before a ride.

Use the − / + intensity controls in the player to scale every target from 50 % to 150 % instantly. If workouts feel off repeatedly, update your FTP — see Your FTP is a guide, not a verdict.

That's ERG mode: the trainer holds the target power regardless of cadence, so a lower cadence means more resistance. Keep a steady cadence around 85–95 rpm. More in How ERG mode works.

Your session is saved every 15 seconds. The next time you open YourIntervals you can resume, save or discard the interrupted ride.

Open the ride in History and tap Export FIT (Pro). The FIT file contains power, cadence, heart rate, speed and laps, and can be shared to Garmin Connect, TrainingPeaks, intervals.icu, Files or any app.

Check your internet connection and try “Upload to Strava” on the ride again. If it keeps failing, disconnect and reconnect Strava in Settings › Strava. Rides that Strava already has are reported as duplicates and not uploaded twice.

Tap + on the Workouts screen and choose Import ZWO File (Pro). Imported workouts can be edited like your own.

Open Settings › Restore Purchases while signed in with the Apple ID you used to buy Pro.

Purchases are processed by Apple. You can request a refund at reportaproblem.apple.com.

On your iPhone only — your FTP, settings, custom workouts and ride history never leave the device unless you export or upload a ride. There's no account and no server. See the privacy policy.

Delete individual rides or workouts in the app, or delete the app to remove everything. Anonymous analytics (only if you opted in) can be switched off in Settings › Privacy at any time.