You as a coach you are providing this application for your clients. It is easily set up and powerful to help you keep track of all your sessions and payments. This is a huge benefit for you the coach and is a tool for your business. You will want to make sure all your clients are in one location and if you give your clients to option to use the app you will not have all your clients organized together. When you provide this as part of your service/business then you can keep your entire client list, notes and payment plan automated and organized.