Along with iOS app development support, the tools also gained the ability to build RIM PlayBook apps. Android OS app support was added earlier this year.
The development tools support building apps for iPhone and iPad-size screens, let developers target specific platforms with app builds, and can create Web apps.
Adobe Flash Builder 4.5 is priced at US$249, or $699 for the Premium version with support for memory and performance profiling, improved performance for larger apps, command line support, and network monitoring. Flex 4.5 is available as a free download at the Adobe Web site.