The release of CS5 made it possible for Flash developers to create exciting content for iOS devices without changing their workflow. However, with only a fraction of the computing power of a modern day desktop or laptop, developing for devices such as the iPhone requires special design and coding considerations.
One of the largest bottlenecks is graphics rendering and it has become an area of frustration for many. It is simply not realistic to build the same graphics-heavy FLAs that you normally would for desktop delivery and expect them to run well on mobile. Even seemingly simple graphical operations can perform badly on iOS devices if poorly implemented.
By making available the same powerful drawing and animation tools that you are already familiar with, the Flash IDE can actually lull you into a false sense of security. For example, complex vector artwork, masks, timeline animations, deeply-nested display lists, and alpha transparencies are all easy to create but can negatively...