Updating your itunes
If you are having issues updating an app, we can offer you some tips.
However, if your problem continues, you will have to contact i Tunes Support, Apple Technical Support, or visit a local Apple Retail Store as they are best equipped to handle such issues.
You’ll see the price right next to the app and, again, many of them are free.
Your apps will be downloaded to your computer and will appear in your Apps Library in your i Tunes Source list.
Alternately, you can check your i Tunes purchase history to see if the account you are using was used to purchase an app.