Google's Fitbit overhaul is actually great. There's just one catch.

It took years after acquiring Fitbit, but Google is finally shaking up its health and fitness products and services. Last month, the tech giant officially replaced the well-established Fitbit app with Google Health, and it launched the brand new Google Fitbit Air tracker with an ultra-minimal design that’s built for 24/7 use. I’ve tested them both for two full weeks, and here’s how they stack up.Fitbit Air returns to the company’s roots in more ways than one. It doesn’t feature a screen like the...