Fitbit has been cornering the fitness and sleep tracking market for years, but Apple just upped its game with the new WatchOS 9. If you’re trying to decide which one to buy, here’s how they do with sleep tracking.
Fitbit has been cornering the fitness and sleep tracking market for years, but Apple just upped its game with the new WatchOS 9. If you’re trying to decide which one to buy, here’s how they do with sleep tracking.