I'm torn, because QS is something I'm interested in and something I think many could benefit from, but at the same time this article reads like an advertisement, especially since it suspiciously lacks mention of well known alternatives. You could argue that they only mention what they think of as "the best", but I would argue that most of these tools put far too much of your information into other peoples' hands. As an alternative, at least for biometrics, consider the following list of bluetooth enabled devices which can be used with software that doesn't upload your data to someone else's servers:

http://personalheartmonitor.com/sensors.html

I'd also have to recommend org-mode in Emacs, at least for time tracking. I know it's not "mobile", but I use it on my phone to track all sorts of things, and since the format is plain text, I can slice and dice in any language I want, no third parties needed.