Smartphones can be a great tool for keeping track of exercise, whether that's using their GPS receivers to document runs or connecting with devices like heart rate monitors. Last year, Nike launched its own solution, a wristband-based accelerometer called the FuelBand. While users can upload their data to Nike's personal tracking website via there computers, or with an iOS app, there hasn't been a similar version available for Android. Despite ongoing assurances that such an Android app was forthcoming, Nike has now changed its tune, announcing that it is not working on any Android ...