As a scuba diver, I am always in the water. One thing that I noticed was that even though I was exercising I was not closing my apple fitness rings one the days that I was teaching scuba. I decided that something needed to be done to give credit for the exercise I was doing. So I wrote Scuba 2 Activity! It is a very basic dive log app that allows you to add your dives and with basic information you provide it calculates the calories burned and then adds that information to the Health data which then adds the information to the Fitness data and helps complete the rings.