URL Schemes in iPhone application

Question

I have an iPhone application which I wanted to add URL schemes to. The thing is that I have both a free version and a plus version.

What I would like to do is use the same scheme for both apps, but if the plus version is installed I want to the PLUS version to launch instead of the free version. Is that possible?

Br,
Paul Peelen

Answer 1

No. If multiple apps register for the same URL scheme, it is undefined which app will be activated by the OS. From the iOS Application Programming Guide:

Note: If multiple third-party applications register to handle the same URL scheme, it is undefined as to which of the applications is picked to handle URLs of that type.

Edit: just a thought how you might work around this issue: have your plus version register a second private URL scheme that you do not publish. Then, if your free app is launched from a URL, have it check whether the plus version is present and forward the passed URL to the plus version (via its private URL scheme).