Personally, before I decide to try something like this I would be interested to know how the app collects data from the user. I participated in <a href="https://www.trackyourhappiness.org/" rel="nofollow">https://www.trackyourhappiness.org/</a>. If you aren't familiar, it surveys you multiple times per day (it was configurable I think). The survey's were short. At first I was happy to do it, but over time the surveys got more and more annoying to the point where I stopped doing them altogether. It got too annoying for me personally before I completed enough surveys for them to compile a full profile for me. Has this app improved upon the data collection process at all?
The service looks interesting and I am always interested in data tracking but having to enter my credit card for the free trial was an instant red flag for me. Why not just make a Lite version with not as many features available to be tracked or make the free trial actually free?