Assuming this scenario-
A user downloads a zip file A after in app purchase A. Then he updates the application to new version.
Now, does he have to download the zip file A again or is it still there in the device?
One more question : How do I verify that the zip file A has been downloaded?
The file is still on the device:
When upgrading, only the binary of the app is replaced (
.app).The Documents directory and User defaults remain untouched between two versions.