Fitbit Charge review: An improved band, but lacking heart rate

The Fitbit Force was our favorite fitness tracker of 2013 next to the Jawbone Up24, but it suddenly disappeared early this year, recalled due to skin rash reactions. Good news: the Fitbit Charge is the Fitbit Force reborn. It's actually even improved: the band has a better snap-on wristband, and Fitbit's firmware now ...