No, once the application is installed on your client device, it will continue to work.
What I do for my ADHOC applications is to have a text file on a private web server that my ADHOC applications "ping" (for example, via [[NSString alloc] initWithContentsOfURL] ), and if the contents of this text file says something- something like "INVALID" , I exit(-1) application. This is usually a good thing to do with customers who are potentially tough or do not pay their bills.
If you are doing something like the one I describe above, MEET to remove this code before posting it on the Apple Store. Apple may reject your application to perform this trick.
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