So I think my use of the word "automatically" was a bad one. I think I meant "super easy". For instance, when I step out the door, I open my Strava app, and I hit "Start Running", and then I start running. When I'm done, I hit "Finished" and it saves every stat it tracked about my run, and later after some processing, it tells me even more things, like whether this run was better than other runs or whether I ran a new route or whatever. The point being that I don't have to remember anything other than hitting "Start" and "Finish". For an app like yours, I have to go back to my computer or actually type a button in.
I read an article this morning -- I can't remember which one, sorry -- but the author basically suggested that any time you can eliminate typing on a mobile device, you should. If you can make everything tappable in a few seconds on a mobile device, you're golden.
That said, I think this particular activity is in need of new solutions -- not Yet Another Tracker.
Anyway, good luck. Hope this works out for you! Like you said, exercise is all about being healthy, so if this works for you, great! I'm purely offering advice from a business standpoint (as in, I would pay for this product if _____)
