Well, does your app have all the turn off things that actifit and other BlockChain apps have such as actifit that rewards you with dust(very small financial value)??
If that’s the case, I don’t see why people should bother and not just stick with the traditional apps from google and Apple, Fitbit etc since they also don’t give you monetary value, but at least they’re way more professionally designed and have a much better user interface.