As of today there are around 2-3 million apps in Google Play Store & Apple App Store. The way it is going it could be very difficult to know where it will end up. Anyway i mean in such time where for every word you search it can give you thousand of options there finding the best 5 apps in any category could be difficult & in health & fitness it is also complex. But the below apps have been selected based on 3 criteria such as. Productivity, Usability & Simple to use. So Now lets go down to the field.