Compatibility guide
Which sports watches work with Intervals.icu
Garmin, Amazfit, Polar, COROS, Suunto, Apple Watch — which connect directly, which need a bridge app, and what data actually syncs. A practical compatibility reference.
Connect your watchWatch compatibility at a glance
Native integration means direct sync without a middleman. Bridge means a third-party app such as HealthFit or RunGap is required.
- ✓Full bidirectional sync — workouts and wellness
- ✓HRV Status and body battery
- ✓Workout push to all Garmin models
- ✓Training load and VO2max
- ✓Completed activities and wellness can sync
- ✓Planned upload: next run, walk, or hike only
- ✓Historical fetch is limited by Huawei API rules
- ✓No original Huawei FIT file export through the API
- ✓Native sync via Zepp — workouts, wellness, HRV
- ✓Workout push to T-Rex 3 Pro and Balance 2
- ✓Sleep score and SPO2
- ✓Good data coverage at a lower price
- ✓Native direct sync — workouts and HR
- ✓Training load and recovery status
- ✓No workout push to watch
- ✓Native workout sync plus basic wellness data
- ✓Workout push back to the watch is supported
- ✓Some fields depend on what the COROS API exposes
- ✓Native workout sync
- ✓Workout push back to the watch is supported
- ✓Wellness coverage is lighter than Garmin or Amazfit
- →Requires Intervals.icu Companion, HealthFit, or RunGap
- →Wellness and HRV via Intervals.icu Companion
- →Planned workouts to the watch via Intervals.icu Companion
- ✓Native workout sync
- ✓No wellness data
Garmin — full integration, best support
Garmin connects directly to Intervals.icu without any middleware. The sync is bidirectional: workouts flow from the watch to Intervals.icu automatically, and structured workouts planned in Intervals.icu push to the watch.
HRV Status, Body Battery, training load, and VO2max estimations are all available in Intervals.icu. This is the most complete data pipeline of any watch brand on the platform.
Every recorded activity appears in Intervals.icu within minutes of syncing the watch to the Garmin app.
Structured interval workouts built in Intervals.icu sync directly to the watch for all Garmin models.
HRV Status, Body Battery, stress score, and sleep data all sync natively — key inputs for recovery analysis.
Garmin's training load and VO2max estimate complement Intervals.icu's own CTL/ATL/TSB metrics.
Huawei Health — supported, with practical limits
Huawei Health can connect to Intervals.icu when Health Service Kit is linked in the Huawei app. Completed activities and available wellness data can arrive automatically after the watch syncs with Huawei Health.
For STAS, this is enough to support the main coaching flow when completed workouts reach Intervals.icu with useful fields.
Practical limits: Planned-workout upload is currently for the next run, walk, or hike only; other activity types are skipped and one workout is uploaded at a time. Huawei API history and original FIT export are also more limited than Garmin.
Amazfit / Zepp — native, strong value
Amazfit has native integration with Intervals.icu through the Zepp platform. After authorization, workouts sync automatically within a few minutes of completing an activity. Wellness data — sleep, SPO2, stress — and HRV (rMSSD) are available when enabled in the Intervals.icu settings.
Amazfit covers most of what Garmin offers at a significantly lower price point. The main limitation is workout push: only T-Rex 3 Pro and Balance 2 support receiving planned workouts from Intervals.icu.
Connect Amazfit once in Intervals.icu settings — all subsequent workouts sync automatically without any manual action.
HRV (rMSSD), sleep score, SPO2, and stress data available — must be enabled manually in the Amazfit connection settings.
All major endurance sports recorded on Amazfit sync correctly with sport-specific fields preserved.
Amazfit watches cost significantly less than comparable Garmin models while delivering similar data coverage in Intervals.icu.
Workout push: Available on T-Rex 3 Pro and Balance 2. Intervals.icu automatically uploads planned workouts for the next 7 days. Open the Zepp app on your phone to sync them to the watch.
Other brands and edge cases
Polar, COROS, Suunto, and Wahoo all connect directly. Apple Watch still needs a bridge app.
Polar
Polar connects directly to Intervals.icu. Workouts and heart rate data sync automatically. Training load metrics are available. Wellness data is limited compared to Garmin or Amazfit, and there is no workout push to the watch.
COROS
COROS connects directly to Intervals.icu. Workouts sync automatically, basic wellness data is available, and planned workouts can be pushed back to the watch. Some fields still depend on what COROS exposes through its API.
Suunto
Suunto connects directly to Intervals.icu. Workouts sync automatically, and planned workouts can be pushed back to the watch. Wellness coverage is lighter than Garmin or Amazfit, but the core training path is native now.
Apple Watch
Apple Watch still has no direct connection to Intervals.icu, so you need a bridge app. The third-party Intervals.icu Companion app syncs workouts and Apple Health wellness, including HRV, and sends planned workouts to the watch; HealthFit and RunGap send workouts. Do not route workouts through Strava: STAS cannot read their details.
Wahoo
Wahoo cycling computers connect directly to Intervals.icu. Rides sync automatically, and planned workouts can be uploaded to the device. No wellness data.
What to choose if you don't have a watch yet
If Intervals.icu is central to your training analysis, the watch brand matters. Here is a practical guide by budget and use case.
Native full sync, workout push, HRV Status, Body Battery. Most complete Intervals.icu integration at a mid-range price.
Native sync, HRV, wellness, and workout push at significantly lower cost than comparable Garmin. Strong choice for runners and cyclists.
Native Intervals.icu sync, wellness, and HRV. No workout push, but everything else works out of the box.
FAQ
Does Amazfit work with Intervals.icu?
Yes. Amazfit has native integration with Intervals.icu via Zepp. Workouts, wellness, and HRV sync automatically. T-Rex 3 Pro and Balance 2 also support receiving planned workouts from Intervals.icu.
Which watch has the best Intervals.icu integration?
Garmin offers the most complete integration: full bidirectional sync, workout push to all models, HRV Status, Body Battery, training load. Amazfit is a strong second with native integration at a lower price.
Does COROS work with Intervals.icu?
Yes. COROS connects directly to Intervals.icu. Workouts sync automatically, and planned workouts can be pushed back to the watch. Some wellness fields still depend on what COROS exposes.
Does Apple Watch work with Intervals.icu?
There is still no direct connection, so you need a bridge app: Intervals.icu Companion, HealthFit, or RunGap. Companion also syncs Apple Health wellness, including HRV, and sends planned workouts to the watch. Strava does not work as a bridge for STAS: STAS cannot read the details of workouts that arrive through it.
Is Intervals.icu free?
Yes. Intervals.icu is completely free for personal use. No paid tiers, no subscriptions.
Does Huawei Health work with Intervals.icu?
Yes. Completed activities and wellness can sync when Health Service Kit is linked. Planned-workout upload is narrower than Garmin: next run, walk, or hike only, one workout at a time.
Related guides
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