This seems like it would be a cool side project but I could never imagine myself actually using it. I'm not really into "social" things anyways (Facebook, Twitter, etc.) so this is just another solution to a problem that doesn't exist (for me at least). I'd like to see more people solving real problems like Cake Health and Farmigo out of TC Disrupt earlier this year.
That's a good point about kid safety stuff but at what age are kids getting a smartphone? Is it young enough for this use case to apply?
His reaction was definitely unprofessional. It must be disappointing for him but a simple "Thanks for covering the app. I'd like to clear up a few points though..." would have accomplished much more.
It's a pretty good looking app though.