I agree, but I think there is a valuable distinction between making all purchases pop up a basic modal dialog that requires a second tap (the standard Apple in-

I agree, but I think there is a valuable distinction between making all purchases pop up a basic modal dialog that requires a second tap (the standard Apple in-app purchase flow) and requiring donations to load either a UIWebView which requires time to load a page that requests confirmation or to operate via SMS, which requires fully exiting the application to go to the Messages app. One is minimally intrusive, the other not so much.