Earlier quoted context omitted.
I've posted a few things about this in reply to others, but my advice would be; don't make an app. That sounds really jaded, but if you look at the massive players in the fitness space (e.g. BodyBuilding.com, CrossFit, LA Fitness, QVC ;) ) they are all either selling a dream or selling a sport/lifestyle... and all with large recurring revenues. At the other end, you've got millions of exercise trackers and exercise v…
Could you elaborate on why not QS?
1) Medical apps only track vital signs. Tells you nothing about chronic/progressing diseases yet
2) We don't need to obsess about stats to improve our lives. We don't need these kind of distractions.
3) Measurement is still highly manual for many cases. Won't hit the mainstream until people don't notice it.
4) What problems does it solve exactly? Withings is useful though, but only as a luxury/fun item.
It's too early. That's my only sure opinion. Far, far too early. But as this thread proves, I'm quite poor at predicting the future ;)