Developing for the iPhone platform was a piece of cake – one OS, one hardware platform, a powerful, well-documented API, and a simple submission process for the app store. […] In sharp contrast, the BlackBerry was never intended to support an app marketplace for third party developers. As a result developing for the BlackBerry was a nightmare. There are dozens of different models, many with different screen sizes, features, hardware, etc. If your software works on one, it may not work on others – so you have to test every single phone, every time you make a change. Even worse each phone might behave differently depending on which carrier network it is on, adding an extra dimension of complexity to the development challenges. For the Storm we had to write an entirely different version of the software to get it to work.