I still think that charging separately for each platform is the incorrect way to handle this. Yes, as a Programmer myself, I realize that developing for different platforms requires separate skills, and additional work. Android Apps must be programmed in Java, Windows Mobile Apps must be programmed for the idiosyncrasies of the ARM processor, and usually are programmed in C/C++, and iPhone applications are written in Objective-C. However, many other companies that provide their software for multiple see more platforms often provide the software for all of the platforms that they support with a single license. (VMWare for example provides a copy of their Mac, Linux, AND Windows software with a single license.)

As you stated, we aren't paying for the applications themselves (which you stated are being developed for open deployment to everyone anyway), we are paying for the re-branding rights. Honestly, if the iPhone application performs the same functions as the Android or Windows Mobile application, then the argument can definitely be made that it ISN'T a separate application, but merely is being implemented on a different platform. For this reason, I think it is rather ridiculous to force us to pay multiple times for the SAME FEATURES so that we can provide support to the widest audience (multiple device platforms) to the SAME WEBSITES.