There is no separate 1trAIner app for iPhone and Apple Watch yet — it's in the works. Below is an honest look at what you can set up today and what to expect.

What works now

What's not available yet

Sleep, heart rate variability, and resting heart rate from Apple Watch don't reach the service yet: with Apple, this data is only available to an app on the phone itself. That's exactly what the companion app will do.

What the app will bring

Data will sync in the background, and linking will take one step: a six-digit code appears in your dashboard, and you enter it in the app.

About heart rate variability

Apple and Garmin calculate HRV differently: Apple provides SDNN for individual measurements, while Garmin gives an averaged overnight value. That's why they're stored separately in the service and not merged into a single number — comparing them directly isn't correct.

If you have both Garmin and Apple Watch

The same workout will come from both sources. The service will match the records by sport type, start time, and duration, and will keep the Garmin version as the primary one: there will be no double counting of volume.

While the app is in preparation, the most complete data set comes from pairing Garmin + nutrition diary. For Garmin, see the “Connecting Garmin” section.