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GRATUIT
Free
Health & Fitness
Free
Intervals.icu Companion
by Spencer McEwen
Description
Intervals Companion is a powerful third-party companion app for Intervals.icu, bringing your training data to iOS, watchOS, and macOS with beautiful widgets, deep Apple Health
integration, and advanced analytics.
Two-Way Apple Health Sync
Automatically sync workouts recorded on Apple Watch or iPhone to Intervals.icu, and push Intervals.icu activities back to Apple Health to close your Activity Rings. Sync daily
health metrics like HRV, sleep scores, and readiness scores between Apple Health and Intervals.icu, keeping all your data in one place.
Apple Watch Workout Sync
Convert planned workouts from your Intervals.icu calendar and send them directly to Apple Watch so your structured sessions are ready to go when you are.
FIT File Import
Manually import FIT files to Intervals.icu and/or Apple Health. Bring in workouts from any device or platform with a few taps.
Metrics & Custom Charts
Build personalized charts and widgets across all fitness and health metric fields. Visualize the data that matters most to you, your way.
Library
Browse your Intervals.icu workout library and add workouts directly to your training calendar from your phone.
Training Analytics
- Interactive Fitness, Fatigue & Form graph with drag-to-inspect for past activities and planned workouts
- Predict future form based on your scheduled training load
- Vitals tracking: HRV, readiness & sleep scores, resting and sleeping heart rates
- Distance splits and pace zone charts on activity detail screens
Chat & Community
- Send and receive private messages with coaches and athletes directly from your phone
- View and post comments on activities to stay connected with your training community
- Push notification alerts for new messages and activity comments
Widgets & Watch
- Home screen widgets for iOS, iPadOS, and macOS
- Apple Watch app and watch face complications
- Sports Summary widget: weekly goal rings for distance and time with customizable colors
- Silent push notifications trigger automatic updates when new activities or wellness data arrive on Intervals.icu
Intervals Companion is an independent hobby project, not affiliated with or endorsed by Intervals.icu. Fitness metrics and scores are for informational purposes only — not a
substitute for professional medical or coaching advice.
integration, and advanced analytics.
Two-Way Apple Health Sync
Automatically sync workouts recorded on Apple Watch or iPhone to Intervals.icu, and push Intervals.icu activities back to Apple Health to close your Activity Rings. Sync daily
health metrics like HRV, sleep scores, and readiness scores between Apple Health and Intervals.icu, keeping all your data in one place.
Apple Watch Workout Sync
Convert planned workouts from your Intervals.icu calendar and send them directly to Apple Watch so your structured sessions are ready to go when you are.
FIT File Import
Manually import FIT files to Intervals.icu and/or Apple Health. Bring in workouts from any device or platform with a few taps.
Metrics & Custom Charts
Build personalized charts and widgets across all fitness and health metric fields. Visualize the data that matters most to you, your way.
Library
Browse your Intervals.icu workout library and add workouts directly to your training calendar from your phone.
Training Analytics
- Interactive Fitness, Fatigue & Form graph with drag-to-inspect for past activities and planned workouts
- Predict future form based on your scheduled training load
- Vitals tracking: HRV, readiness & sleep scores, resting and sleeping heart rates
- Distance splits and pace zone charts on activity detail screens
Chat & Community
- Send and receive private messages with coaches and athletes directly from your phone
- View and post comments on activities to stay connected with your training community
- Push notification alerts for new messages and activity comments
Widgets & Watch
- Home screen widgets for iOS, iPadOS, and macOS
- Apple Watch app and watch face complications
- Sports Summary widget: weekly goal rings for distance and time with customizable colors
- Silent push notifications trigger automatic updates when new activities or wellness data arrive on Intervals.icu
Intervals Companion is an independent hobby project, not affiliated with or endorsed by Intervals.icu. Fitness metrics and scores are for informational purposes only — not a
substitute for professional medical or coaching advice.
What's new (v3.2)
New Features
- (Beta) New FIT Import screen. Add iCloud or Dropbox folders (requires Dropbox app). Choose how
many days of history to scan and whether to import into intervals.icu, Apple Health, or both. Directories are scanned
automatically at app launch or manually. The manual FIT file import sheet has moved here from the Apple
Health screen. Import toggle options now remember prior state. Activities manually uploaded to intervals as FIT files can now be
synced to Apple Health later via Apple Health screen.
- (Beta) Quick edit screen for daily metrics. Tap the new icon in the header on the Metrics screen.
- HRV Trend indicator and home screen widget on iOS. Enable on the Fitness screen settings, tap the graphic for a
detail sheet. Includes a new 7-day trend line plus calculation tweaks and bug fixes. HRV Trend also added to watchOS.
- Best efforts screen configuration options and new spider chart and widget.
- Auto sync options for workouts sent to Apple Watch (Settings → Workout Settings).
- Support for lean body mass as a custom metric (Apple Health sync, Metrics, etc.).
Improvements
- Notifications now deep link to the relevant screen when tapped.
- Metrics screen and widgets cleanup. Added a readiness chart option for Polar devices using values on the -10 to +10
scale. The (i) icon for readiness/sleep score explanation is now hidden when this app didn't calculate the score.
- Sleep score core logic updates.
- watchOS date range options updated to match iOS.
- "Resync Multiple Days" is now limited to 2–7 days to discourage daily bulk backfill; use the history days option with
auto sync toggled off/on instead.
Fixes
- Apple workout import now waits for GPS data to finish syncing. Fixes outdoor workouts being miscategorized as
"indoor" when GPS routes or HR were slow to transfer from Apple Watch to iPhone.
- Workouts with custom zones now display (custom zones still aren't fully supported, but basic info shows).
Removed
- Pulled the Apple Intelligence explanation features for readiness and sleep scores. On-device AI didn't work well
for this use case. It may return later.
- Workouts with custom zones now display (custom zones still aren't fully supported, but basic info shows).
- (Beta) New FIT Import screen. Add iCloud or Dropbox folders (requires Dropbox app). Choose how
many days of history to scan and whether to import into intervals.icu, Apple Health, or both. Directories are scanned
automatically at app launch or manually. The manual FIT file import sheet has moved here from the Apple
Health screen. Import toggle options now remember prior state. Activities manually uploaded to intervals as FIT files can now be
synced to Apple Health later via Apple Health screen.
- (Beta) Quick edit screen for daily metrics. Tap the new icon in the header on the Metrics screen.
- HRV Trend indicator and home screen widget on iOS. Enable on the Fitness screen settings, tap the graphic for a
detail sheet. Includes a new 7-day trend line plus calculation tweaks and bug fixes. HRV Trend also added to watchOS.
- Best efforts screen configuration options and new spider chart and widget.
- Auto sync options for workouts sent to Apple Watch (Settings → Workout Settings).
- Support for lean body mass as a custom metric (Apple Health sync, Metrics, etc.).
Improvements
- Notifications now deep link to the relevant screen when tapped.
- Metrics screen and widgets cleanup. Added a readiness chart option for Polar devices using values on the -10 to +10
scale. The (i) icon for readiness/sleep score explanation is now hidden when this app didn't calculate the score.
- Sleep score core logic updates.
- watchOS date range options updated to match iOS.
- "Resync Multiple Days" is now limited to 2–7 days to discourage daily bulk backfill; use the history days option with
auto sync toggled off/on instead.
Fixes
- Apple workout import now waits for GPS data to finish syncing. Fixes outdoor workouts being miscategorized as
"indoor" when GPS routes or HR were slow to transfer from Apple Watch to iPhone.
- Workouts with custom zones now display (custom zones still aren't fully supported, but basic info shows).
Removed
- Pulled the Apple Intelligence explanation features for readiness and sleep scores. On-device AI didn't work well
for this use case. It may return later.
- Workouts with custom zones now display (custom zones still aren't fully supported, but basic info shows).
