Screen-free fitness trackers live and die on the strength of their apps. If you don’t have a screen to look at on the device itself, you have to dive into the app regularly to see your stats instead, and that data needs to be well-presented.
This has always been a strength for Whoop, has been a focus for the Fitbit Air since launch, and it was a glaring weakness when the Polar Loop screenless band launched, because the partner Polar Flow app wasn’t up to scratch.
