We Wore Six Recovery Trackers For 90 Days. Three Were Worth It.

Recovery trackers make a specific promise: that a number in the morning will tell you how hard to train. We wanted to know how well that number holds up over a season rather than a week.

Two testers wore all six devices simultaneously for ninety nights, logged training and subjective readiness independently each morning, and paid full retail for everything, as we always do.

How we tested

Ninety consecutive nights, both testers, all six devices worn at once — rings on the same hand, bands and watches on opposite wrists, rotated weekly to control for placement.

Each morning, before looking at any app, both testers recorded a subjective readiness score out of ten and their resting heart rate manually. We then compared each device's overnight metrics against that log, and against each other.

What the scores are actually made of

Nearly every readiness score is a weighted composite of overnight heart rate variability, resting heart rate, respiratory rate, sleep duration and recent training load. The weightings are proprietary and none of the manufacturers will share them.

“HRV is a legitimate marker of autonomic state and it is extremely noisy day to day,” says Marta Ilić, PhD. “A seven-day rolling average tells you something real. A single morning value largely tells you when you went to bed.”

“A seven-day rolling average tells you something real. A single morning value largely tells you when you went to bed.”Marta Ilić, PhD

The three worth the money

Best overall. The most accurate sleep staging against our manual log, a genuinely useful 14-day trend view, and the only app that showed its confidence interval. Comfortable enough to forget. Subscription applies.

Best without a subscription. Slightly less refined analysis, all features included in the purchase price. Over three years it works out at less than half the cost of the winner.

Best for athletes. Poor as a general wellness device, excellent at training load and repeatable HRV measurement. Requires you to be interested in the underlying data.

The three that didn't make it

One had good hardware paired with an app that gamified everything into meaninglessness — every morning was “optimise your day”, regardless of input.

One consistently over-reported deep sleep by a wide margin against every other device, in a direction that flattered the user.

And one worked well but priced its subscription above the others without offering anything the winner did not. Good product, wrong price.

What we'd tell a friend

If you sleep badly and want data to take to a doctor, a tracker is genuinely useful. If you already know you sleep badly, it may simply give you a number to worry about — orthosomnia is a documented phenomenon and we both experienced a version of it during testing.

Ignore the daily score. Watch the weekly trend, and only when it moves against how you actually feel.

How we review

We buy every product we test at full price. We do not accept press samples, sponsored placements or affiliate arrangements that vary by product. If a device is not worth the money we say so and we say why.