Category: The 11 Best Free Workout Apps Tested by Experts 2026

Instead of using step counts as the primary stat, the Mio Slice claims to measure all-around activity with a proprietary “personal activity intelligence” based on heart-rate monitoring. The Whoop automatically detects around 145 different activities and logs them in the app. The Whoop’s step count totals on our one- mile tests were very close to…