How to tell if a user updated my app or installed a new one

Posted by user310318 on Stack Overflow See other posts from Stack Overflow or by user310318
Published on 2010-04-06T19:11:13Z Indexed on 2010/04/06 19:13 UTC
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iphone-sdk

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updates

I need a way to tell if the app being used by a user is a fresh new install (new user), or was a pre-existing user who updated.

The previous app version did not track UDID's, and didn't save anything (it just ran as a simple app).

Is there a way for an update to tell if the user previously installed the app? Even if that app didn't save anything into the documents folder, and the app didnt communicate with a server (UDID post)?

(id like to be able to offer bonus features to my existing loyal users who had already installed the original app and updated)

thanks!!

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