App must be running on pebble all the time
In order to get your daily results from the app it must be the only app running. You can not enjoy the nice watch faces that pebble has you always have to look at LetsMuv. The app always crashes and says "LetsMuv app has crashed". You are then required to reinstall it loosing all your data saved.
It is in constant Bluetooth and drastically reduced your battery life on the Pebbel. Overall the app requires some work and has some potential it is a long ways from perfect.
Maytag Man about
LetsMuv for Pebble, v1.3.1