Connecting your recovery data: Whoop and Apple Health

Written By Martijn Russchen

Last updated About 11 hours ago

Three ways wellness data gets in (use any combination)

  1. Intervals.icu — anything your device already syncs to ICU (Garmin, Polar, Wahoo, Oura, and more) is read automatically. Whoop via this path syncs every ~8 hours.

  2. Whoop direct — connect in Settings → Integrations for real-time recovery scores (Pro/Max).

  3. Apple Health — enable in the iPhone app → Settings → Apple Health. Anything that writes to HealthKit feeds IntervalCoach directly.

If you mix sources, IntervalCoach merges them into a single daily wellness record instead of letting them fight over the same metric.

Connecting Whoop

Pro/Max users can connect Whoop directly for real-time recovery. You can keep Whoop connected to both Intervals.icu and IntervalCoach — they complement each other and won't duplicate data. The direct connection gets your recovery score in real time, so your daily email is sent the moment your Whoop recovery is ready, and you get richer sleep data (stages, efficiency, sleep debt). Without the direct connection, IntervalCoach still uses Whoop data from Intervals.icu — just with the ~8-hour delay.

Connecting Apple Health

Open the iPhone app → Settings → Apple Health → toggle Sync on and grant permissions. From then on anything that writes to Apple Health — Apple Watch, an Oura ring, a Withings or Garmin Index scale, a period tracker, Garmin/Polar via their auto-sync apps — feeds IntervalCoach directly. What syncs: HRV, resting heart rate, respiratory rate, SpO₂, wrist temperature, full sleep breakdown (REM/deep/core), VO₂ Max, heart-rate recovery, body weight, body fat, and menstrual phase. iOS syncs in the background; there's a "Sync now" button to force a refresh. Compatible data also mirrors back to your Intervals.icu wellness tab.

Apple Health or Whoop?

Use whichever fits — they're equivalent first-class sources and coexist without conflicts. Apple Health is simplest if you live in the Apple ecosystem or combine multiple wearables. Whoop direct is best if Whoop is your primary device and you want real-time morning scores without the ~8-hour delay. With both, IntervalCoach merges them and prefers the most recent reading.