The biggest problem I see with users sometimes is that they don't bother to read what an app does and what it does not - and what it needs and what the end-user can adjust.
There are tons of great apps in the market - but more than a few require you to have certain knowledge in order to use them, and yet folks who have just gotten the phone are enticed by (usually) their peers to use this app or that without any explanation as to why they should use it, or, even more importantly, how they should use it.
Some of this rests on the developers' shoulders - they either expect their users to be smarter than what they really are, or else they do not include very detailed instructions, expecting the user to already know most, if not all, of the required and relevant background information.
However, some of the onus is on the end user as well. Unless you live in extreme cold environments (and let's face it, right now, the Northern HemiSphere is anything but cold, and the Southern one is getting over their cold now), I cannot really see a need for this app. Not right now at any rate.
