A few weeks ago, I pitched Bob and Brooke on my idea for an iPhone app that gives you ideas for iPhone apps - plus some of the ideas that would be in my app. (They were skeptical.) I then asked listeners to send along their own great ideas for apps by emailing me.

Lots of you did, here are some highlights. If you have more, email me at ideasfortheideasforanappapp@gmail.com or Tweet to @jodyavirgan.

Smartphone apps are big business, and increasingly complicated to develop. WNYC producer Jody Avirgan talks with Rekha Murthy of PRX and Lisa Bettany of Camera+ about what it takes to get one made -- and pitches his idea for an app to Bob and Brooke.