Valuable gadgetry means good data

OK, this stuff is cool enough to make me want to keep my iPhone:

iPhone glucometer:
http://www.wired.com/gadgetlab/2012/01/video-ihealth-smart-glucometer/?utm_source=facebook&utm_medium=socialmedia&utm_campaign=facebookclikthru

iPhone blood pressure monitors & trackers:
http://mashable.com/2011/07/03/review-two-blood-pressure-monitors-for-iphone-ipad-video/

I'd like to design a mobile app for tracking and managing pain. Flareups and neurotoxic food sensitivities wouldn't stand a chance. Touchscreens rock for radio buttons and simple data entry; just have to make it easy to pick what you need and dump it into a dashboard with different ways of viewing the data -- historically, by symptom, by factor; graph, chart, etc.

Collecting and tracking your own data is key to surviving and thriving with a long-term condition.  It is possible to make good use of gadgetry, though it's not something I usually focus on.

Any of you developers want to write the backend?