Is it possible to write a function in an iphone app A that when you click on a button within that app A it will close app A and automaticall open up App B
                +5 
                A: 
                
                
              
            Take a look at Custom URL schemes.
Nice tutorial here http://iphonedevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html
                  Tom Irving
                   2010-06-07 22:50:21