Bought a small fitness tracker for myself and my husband for xmas, they were inexpensive, but a good brand nonetheless, I set mine up first. There were no instructions in the box (annoying) it was all online. I downloaded the app, but I found it really complicated to use and the website didn't really explain how to use it properly..it was a little clip on device, couldn't get to grips with it. So I bought another cheapy from the highstreet one worn on the wrist, the catch was awkward and kept popping off, again no proper instructions in box but tried it and it was a little bit more understandable, used it for a couple of days but found that the data was totally inaccurate eg, telling me that I'd slept for 4 hours when I know it was at least 7! Decided that I'd try a proper fitbit product, ok a clip on one, just got it today, and lo and behold it's even more complicated that the first one, again no written instructions. Dowloaded the app, couldn't make head nor tail of it...and I'm sending it back! I don't think I'll bother!