Let me tell you about my friend Fitty.
I've owned a fitbit since late 2014, the charge HR to be exact. I wore it every single day, all day, even throughout my workouts. I loved that it tracked my steps, heart rate, sleep, calories burned, and it doubled as a watch as well. It helped me lose a lot of weight when I synced it with the myfitnesspal app. I would put the food and amount into myfitnesspal, and depending on how many calories I burned from my fitbit, it told me how much more food I could eat for the day. I dropped about 20 pounds.
However I went through two of those fitbits in two years because the ribbing on the band would detach from the fitbit. I stopped using the fitbit charge HR in early 2017 because of this issue.
I recently went to target and purchased the fitbit charge 2, which is a newer version. It tracks your steps, heart rate, sleep, calories burned, gives notifications on when to get up and walk, and acts as a watch. It is like the charge HR that I used to own, except the bands are interchangeable! This is perfect because I was so annoyed with how the charge HR band would break within months of use. If the bands on the charge 2 broke as well, at least you could buy a new band instead of a whole new fitbit.
I wear this fitbit every day, even when I sleep, through workouts, etc and I love it! It's a great way to get into shape, or just to know how much calories you burn per day. It's a lot more accurate than that health app on the iphone.
This is what it looks like on my wrist. I have extremely tiny wrists so it looks huge in this picture, but it's actually not bulky. Yes that says my resting heart rate is 57.
If you are looking to buy one and get more into fitness, I highly suggest this fitbit over any other.