It seems to be the beef between Adobe and Apple is not that too as Adobe recently has released an updated Express app of Photoshop for the iPad and iPhone from Apple.
The app, already available on the handsets of Android, has changed its name to Photoshop Express from Photoshop Mobile. This is the first to be much compatible with the iPad from Apple. And it contains a large screen which should help to make editing photo easier.
There also exists a user interface which is updated for the Photoshop Express by Adobe for the iPad and iPhone from apple, and visually it is quite a lot pleasing.
Do not expect that it will be having all the features of the Photoshop of desktop fully, as this iPhone app from apple enables only the very basics such as rotation, cropping and another few effects. Still, it has been a very solid way in case of editing photos of yours on your go.
I also think it was summed up by a farmer best in the review he made on iTunes: If you expect features like Photoshop, then this app must be forgotten. What so ever, if you search for basic transforming and editing of pictures on the iPhone, this very app is truly cool. And above all it is absolutely free!
The Express app of Photoshop makes its presence just being the relationship between Apple and Adobe and it continues being tenuous, at its best. The crux of that very beef is such that Apple has no desire for having Flash on iPad or Unlocked iPhone4 from apple just because Steve Jobs has got a pretty strong belief that in case of issues of performance it is actually not at all right for the entire platform.
Adobe hence has countered such that the lacking of Flash could strongly hurt its business.