I purchased this mainly for the 24/7 heart monitor to prove to my GP that I had issues. The app is great in that you can see the graph each day of your heart rate and even pinpoint the time of day of certain peaks and be able to match up what you were doing at the time for the rate to be high or low. But one would think that there would be a way of printing these out, or copying them to make the data more useful. No. I had to sit in the GP office and pick a couple days here and there and show on my phone. Come on fitbit. How about going all the way to make the data useful? Otherwise only other problem is that I get a skin reaction where the loop for the strap holder touches my skin. It irritates and blisters and I have to change wrists while my left heals.