Fitbit activity tracking compared to Runtastic (same phone, same walk, running simultaneously). Why is Fitbit so bad at interpreting the exact same data? : r/fitbit
Exercise tracking color code - Fitbit Community
Woman looking on health and fitness apps such as Runtastic, FitBit, RunKeeper, Moves, Nike Running and others on Apple iPhone 5s Stock Photo - Alamy
Sleep efficiency vs. heart rate - Fitbit Community