Californian computer giant Apple has recently barred its iPhone application developers from using Adobe’s Flash software by making iPhone OS 4.0 incompatible with Adobe's Flash.

Apple said Flash, which enables features like videos and animation on devices, would degrade the performance of its products.

Apple’s chief executive Steve Jobs had reportedly described Flash as lazy in a town hall meeting in January.

As per the iPhone OS 4 SDK Developer Program License Agreement, developers must program iPhone apps in languages approved by the company such as Objective-C, C, C++, or JavaScript.

Apps that will be created using an intermediary translation or compatibility layer or tool will not be approved by Apple.

However, Adobe’s chief technology officer Kevin Lynch said that Apple was free to take such decisions.

But, in a quarterly report filed in the US SEC, Adobe admitted that Apple’s decision to stop running Adobe Flash on its products could hurt it.

Apple’s iPad, which will not run Adobe Flash, hit the US stores on April 3. The company later declared that it sold more than 300,000 units on the launch day.