i hace create an adhock ipa file that i install on an ipad
the application create a database and get some data from my server and saves it on the device
now my problem that if i created and new version ( not on appstore) localy on my maching i cant update the app i need to remove and install the app again (this means that my data will be lost ) is there a way the data or the database file not removed with the app ?
If you increase the app version number in the app descriptor file, then use iTunes to update, iTunes will see that it's an upgrade and offer you the option to "upgrade" rather than "remove" the app. When you upgrade your app's data should be retained.