Zone Training Log
Web App

iPhone · Recommended

Connect Apple Watch on iPhone

Apple Watch records into Apple Health, which is Zone Training Log’s source of truth on iPhone.

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Start with the provider’s official documentation

Vendor documentation is authoritative and may be updated before this guide.

Apple: Manage Health data

Last verified:

Vendor screens, wording, and available data types can change. Check the official documentation above if a step looks different.

Data path

Apple Watch
Apple Health
Zone Training Log

Set up the connection

  1. Pair Apple Watch with this iPhone and record a workout with the Workout app or another Health-compatible app.
  2. Open Zone Training Log and allow workout and heart-rate read access when asked.
  3. Keep Apple Health enabled as the shared store; no Apple Watch account connection is needed in Zone Training Log.

What to expect

This is the recommended iPhone route. Apple’s Workout app normally provides the workout and detailed heart-rate samples needed for zone analysis.

Important limitations

  • A workout needs usable heart-rate samples for Zone Training Log to calculate time in zones.
  • Third-party watch apps can write a different set of fields than Apple’s Workout app.

Verify the data before opening Zone Training Log

  1. Open Health → Browse → Activity → Workouts and confirm the workout appears.
  2. Open Health → Browse → Heart → Heart Rate and check that readings exist during the workout.

Troubleshooting

  • If the workout is missing, confirm the recording app may write Workouts to Health.
  • If the workout has no zones, check that Zone Training Log may read Heart Rate and that the workout contains readings.

Continue in Zone Training Log

Once the workout and heart-rate samples are visible, review the session in the Training Log and check its time-in-zone context.

Open Training LogLearn how to review heart-rate zones

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