It's better for the overall ecosystem. Higher quality apps means more time spent on your phone. If we can't duplicate the features of the app that aren't domain-specific, it results in an overall worse feel for the end user.
If you are interested, we could give you some API URLs to work with our JSON API at SpeakBin.com - we're an audio recording platform that integrates with Facebook and Twitter. We could use an iPhone app - if you're interested in getting on board drop an e-mail to [email protected] - I'll get back to you ASAP.