iPhone What happens to previous data when app is upgraded to new version

Question

I have a query regarding What happens to previous data when app is upgraded to new version .

I have a current application having a local database. The user can modif

Answer 1

The data in ~/Documents and ~/Library/Preferences will be kept. Those in ~/Library – I'm not sure, but I think they will be kept too. Those in your .app folder will be completely replaced, but the user can't change what's in your .app folder anyway.