iPhone users are willing to spend more money on apps.
“The user base on the iPhone tends to be more willing to spend money on apps. Part of it is probably do to affluence, and part of it is just that iTunes seamlessly integrates with credit cards more. That one click buy is awesome.”

iPhone users also tend to be early adopters of new applications.
“They are a more engaging user base, and more receptive to trying new things. If you are going to be on one platform, you want to be where the early adopters are.”

Android apps take more time and money to develop.
“We put in 120% of the hours that go into an iPhone app to make an Android app, so the cost is higher.”