The latest update solved the crashing problem, however, after the breathing exercise, the stats page is buggy and just simply incorrect. I assume the app just couldn't gather the actual stats correctly. For example, my resting heart rate was shown as "9999.0" - My active energy was "99999.0" - and the 'stairs stat' also shows up as "9999.0".
This app has some serious potential, I love the idea, however the software just needs some maintenance and tweaking, just like every other app does when it first hits the store. If you guys stick with it and never stop working towards perfection, you'll eventually reach the point where the app is effortless to use and also provide the user with useful, interesting data! I wish you the best of luck, keep the updates coming! Hope this helps!