BaselineCheck compatibility

Your normal is the reference.

Baseline brings your health history together, learns your usual range, and shows what meaningfully changed today.

See how it worksBring your wearable
Built for iPhoneApple Health recommended
Today against your recent rangeIllustrative view
CH–01 / PERSONAL RANGE
Recoverywithin your range
Sleepbelow your range
Loadbuilding steadily
Your recent rangeToday

From history to something you can use.

Population averages can miss what is changing for you. Baseline starts with your own recent history, then keeps the comparison visible as new data arrives.

  1. 01

    Bring in the history you already have.

    Start with Apple Health for the quickest route, or connect a supported wearable directly.

    HISTORYFOUND
  2. 02

    Let your personal ranges take shape.

    Baseline shows calibration progress while it learns, so an early score is never presented as final.

    EXAMPLE9 / 14
  3. 03

    See the change, with context attached.

    Sleep, recovery, strain, stress, and illness signals are shown against what has recently been normal for you.

    SLEEPBELOW RANGE

One clear read on today.

Readiness, sleep, illness, stress, training load, and rhythm sit in one scan. Open any signal when you want the history behind it.

  • Changes shown against your baseline
  • Recovery-aware training suggestions
  • Calibration and stale-data states shown plainly
BASELINEFRI 31 JUL
Today
READY71PRIMED
SLEEP82GOOD
ILLNESS08LOW
STRESS34STEADY
LOAD0.9BALANCED
RHYTHM88REGULAR
Train todayCH–18
Steady run

Your recent load is balanced and readiness is holding.

40–55 MINEASY–STEADY
Illustrative data

Bring the wearable you already use.

Wearable brand is an input, not the identity. Choose the route that already holds the most useful history.

Recommended

Apple Health

Use history written by Apple Watch, Garmin, Oura, WHOOP, Fitbit, COROS, Polar Flow, and other compatible apps.

SRC / HEALTH
Direct

Polar devices

Connect supported Polar 360, H10/H9, OH1, and Verity Sense devices over Bluetooth.

SRC / POLAR
Comparison first

Compatible smart rings

QRing-compatible devices begin in comparison mode and stay out of readiness until their readings have been reconciled.

SRC / RING

Compatibility depends on which health categories each device or app writes to Apple Health.

Start with the history already on your phone.

Baseline meets your data where it is, then gives every new day a more useful reference.

Check your sources