The Amazfit Helio strap uses the same app as high-end smartwatches, but strips down the hardware to a simple sensor (for no subscription).

One great deal we’ve found today is on the immensely useful Fitbit Charge 6 fitness tracker. This handy device can be a huge boon for your health, and while it’d normally set you back $160, this Prime Day deal knocks it down by 38% to just $100.

From telling you how fast you are “ageing”, to giving you a sleep score and even keeping tabs on your blood pressure — fitness trackers and smart watches are more focused on health than ever.

I tried exercising in both the Oura Ring 4 and Whoop MG fitness band. Here is the one I preferred when it came to comfort, usability, and app design.