Apple announced imminent changes to the way software development kit is used and will reject any application that didn't use the mandated tools.

Industry experts said the restrictions might be intended to stop developers re-using applications written with Adobe's Flash. Neither the iPhone nor iPad can run Flash applications.

Adobe released a software package, Creative Suite 5, on 12 April which can turn Flash code into iPhone code.

Flash programs are very widely used on the web and many games and videos are created using the software. However, under the new terms and conditions using Creative Suite 5 would lead to an application being rejected.