Integrations

Connect it once, then stop thinking about it.

Strava, Garmin and Apple Health sync in the background. Sessions go out to the watch the same way they came in.

🎁 Start your 2-week free trialAll featuresLaChart for athletes →
Sat 29 August3 sessions · 268 TSS
2×29.5min + 2×45s
3h55m · 106.45 km · 259 W · 179 TSS
Afternoon Swim
50m · 3.02 km · 1:41/100m · 45 TSS
7×4min
42m · 10.01 km · 4:14/km · 44 TSS

Everything arrives on its own

Rides, runs and swims land with power, pace, heart rate, cadence, laps and per-second streams. Nothing to upload and nothing to chase — or drop a .FIT file in yourself when you want to.

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And goes back out

A structured session written in the builder appears in the athlete’s Garmin Connect calendar with every step and target intact. The steps become laps on the device; they press start.

86.1ms
In your normal range
Last 30 days · normal 41–100 ms

Apple Health for the rest of it

Sleep, HRV, resting and low heart rate come across from the phone, so recovery sits on the same timeline as the training rather than in a second app you have to remember to open.

A runner settling into a steady effort on an empty track at dawn
Thresholds
LT1
350W
1.9 mmol · 141 bpm
LT2
415W
4.0 mmol · 159 bpm

On the wrist, too

An iPhone app for the calendar and the tests, and an Apple Watch face carrying the zones that came out of your own lactate curve.

The rest of it

Other features

Two weeks, nothing charged today

Connect a device, enter a test, and see your own numbers in it. Cancel whenever.

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