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Fitbit Air vs. Whoop 5 am iPhone in the test: measure, interpret, coach | heise online
Translated title. Original: Fitbit Air vs. Whoop 5 am iPhone im Test: Messen, deuten, coachen | heise online
Two lightweight, display-free fitness bands, Fitbit Air and Whoop 5, compare in measuring daily activity, heart rate, sleep, and recovery, with different pricing tiers and features; the test finds similar goals but distinct approaches, and full analysis requires a subscription.