What is the difference between cross-platform development and apps porting? [closed]

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I have developed a cross-platform app using PhoneGap for iPhone and Android. I'm considering to make that app available to other platforms as well. I came across some of Windows and BlackBerry documents about apps porting. This got me confused.

1. What is mobile apps porting?
2. What is the difference between apps porting and cross-platform development?

Answer 1

"Apps porting" is the process of taking an app developed for one platform and "porting" its functionality to another. This is essentially re-development of an existing application.

"Cross-platform" development is the process of using a system like PhoneGap to develop an app once with a single development system, then compiling/generating targeted platform builds for multiple platforms.