IDG Answers is a community of experts who are passionate about technology. Ask a question or answer one below.
One important difference is the Fitbit is water resistant, while the Fuelband is not. You probably wouldn’t want to go diving or anything wearing the Fitbit, since I think it is only ok down to 10m, but it should be safer when you are swimming at the pool or other hanging out at the beach. One positive for the Fuelband though is recharging can be done using a USB port, while you have to keep track of a special charger for the FitBit. Since you only have to charge this isn't a huge deal, but it is one more thing to keep track of...and potentially lose.