Back when I was in the hospital they always asked me all this stuff, so one evening I made a program that i could just press a button to log various things. When the doc asked me the next day and I pulled it up on my laptop for him to see - he wondered from what medical software company I got it from because it was really nice. Oh that was just me bored for 8 hours one evening
I don't know how to write android or iOS apps though unfortunately. Not that I'm not capable, it takes lots of time!