A health coach wore an Apple Watch, Whoop, Oura Ring, and Fitbit at once to see which is best. He found a clear winner for fitness, health, and sleep.

A health coach wore an Apple Watch, Whoop, Oura Ring, and Fitbit at once to see which is best. He found a clear winner for fitness, health, and sleep.

I pitted 3 sleep tracking apps against my gold standard fitness wearable — but only one of them was up to the test.