Originally Posted by
Dan Druff
Good app ideas are like good .com domain names at this point.
Unless it's really obscure, all of them have already been taken.
Yes, it's still possible to come up with a hot new app idea if it's something really groundbreaking that nobody would have previously thought of. In almost all cases, someone has thought of it much earlier and done it already.
I thought maybe I found an exception in a bitcoin-price-notification app idea (since bitcoin just recently captured the public's attention over the past 6 months or so), but I got laughed off this site when I posted my idea for that app. It had already been done several times over.
I have a call blocking app. It's for jailbroken phones. I didn't bother to look for non-jailbroken apps, but I heard something about needing to do that in order to get a call-blocking app.
However, iOS 7 phones already have a built-in blocking feature, and most people are now running iOS 7, so that's that.