Been using this watch for a few months now, and really starting to miss the Fitbit I had to replace before it. Hardware-wise the Bip is fine, but software-wise it's extremely lacking compared to Fitbit. If you just want to track steps and sleep the Bip is adequate, but if you want to track any exercising outside of walking/running/cycling, you're out of luck. I got the $3-ish dollar third party app that attempts to fix this and take fuller advantage of the Bip's potential, but unfortunately it just doesn't work that well and I'm spending 5-10 minutes a day trying to get it to sync all of the data from the Bip. Not a huge pain but frustrating after enjoying Fitbit's ease of use.
I will say if I switch back to Fitbit I'm going to miss the Bip's always-on reflective screen and ridiculous battery life. I'll be charging it today after 35 days, and I still have 8% to go. If only they made the first party app more full featured, this thing would dominate.