Strong recovery. Capacity is available.
Your overnight markers have returned to baseline. Today can support a deliberate training load.
A clearer read
on your body.
Five calibrated daily signals from the wearables you already own. One personal baseline, resolved privately on your iPhone.
Request early access
Source 01 / 05
Apple Watch Ultra
Local signals. One personal baseline.
Metrier reads the health signals already written to Apple Health and resolves them into a recovery view on your iPhone.
- Connection
- Apple HealthKit
- Becomes
- Recovery · 84
Sunday, 16 August
Today
RecoveryOptimal
84Restored
HRV58 ms+12% vs baseline
Resting HR51 bpmWithin range
5 connected sourcesResolved on your iPhone
Apple Watch → Metrier
Local recovery context.
Apple HealthKit brings SDNN HRV and wrist temperature into your personal baseline.
Recovery84Restored on iPhone
Oura → Metrier
Nightly context, resolved.
Supported sleep and other measurements shared by Oura with Apple Health flow through the active bridge into one consistent sleep signal.
Sleep82Consistent on iPhone
WHOOP → Metrier
Load you can compare.
Supported measurements shared by WHOOP with Apple Health inform Metrier's own derived Strain score.
Strain12.8Productive on iPhone
Garmin → Metrier
Training history stays useful.
Supported heart-rate and workout records shared by Garmin Connect with Apple Health arrive through the active bridge.
Energy76Available on iPhone
Fitbit / Pixel → Metrier
Daily sensing, one frame.
Google Health's own API brings measurements directly into the same source-aware personal calibration.
Stress31Settled on iPhone
Your body isn’t
an average.
Metrier does not grade you against a population standard. It learns your normal, preserves source context, and turns daily variation into a reading you can use.
- 01
Collect without flattening
Samples retain their source, timing, units, and confidence.
- 02
Calibrate over 28 days
Sleep, recovery, load, and autonomic changes are compared with your recent baseline.
- 03
Resolve into five signals
Recovery, Strain, Sleep, Energy, and Stress share one consistent biological frame.
Bring the hardware
you already trust.
Metrier is software. It connects to devices you already own through local health frameworks and permission-scoped APIs.
HardwareConnectionPrimary intake
Apple WatchSeries 4 and later & UltraApple HealthKitLocal · on-deviceSDNN HRV · wrist temperature
Oura RingGeneration 2–4Apple Health bridgePassive · via Oura's appSupported sleep & wellness records
WHOOP4.0 & 5.0Apple Health bridgePassive · via WHOOP's appSupported heart rate & sleep records
GarminEpix · Fenix · ForerunnerApple Health bridgePassive · via Garmin ConnectSupported heart rate & workouts
Fitbit / Pixel WatchGoogle Health appGoogle Health APIDirect · OAuth2Heart rate · sleep · weight · activity
Sources read through Apple Health only surface what the device's own companion app already writes there — proprietary metrics like Garmin Body Battery, Garmin Training Load, WHOOP Strain, or Oura Readiness are not imported. Available measurements vary by device generation, companion app, region, permissions, and provider access; Metrier calculates its own derived scores. Illustrated results are example calculations, not guarantees. Missing inputs remain missing.
Your health data
stays intimate.
Your baseline and health readings live on your iPhone. Metrier has no advertising trackers and does not sell health data.
- Signal calculation
- On iPhone
- Health history
- On device
- Advertising profiles
- None
Know your normal.
Metrier is preparing for release on iPhone.
Metrier Pro: $7.99/month, or $39.99/year (US). Eligible new annual subscribers receive a 7-day free trial, then $39.99/year unless cancelled. Monthly plan has no free trial. Subscriptions renew automatically; manage or cancel through your Apple Account.
Request early access