It means if you have bought anything on the particular app before you updated it you can restore those things you bought on that app
To restore in-app purchases in Infinity Blade 2, you must download the in-app purchase again. You must use the same iTunes store account name from the original in-app purchase.
You can restore your utility backup on your app on your phone by using the App Backup and Restore.
Uh? Do you mean the App Store app? That is where you can purchase more apps.
If you mean Cydia, you have to keep it there. To Un- jailbreak your I-Device, plug it into Itunes and hit restore.
The way to restore a deleted app on the Samsung Galaxy S3 is to download it again from the Google Playstore. The app may sometimes also be available on the cloud if it was previously backed up.
Restore and then re-do. that's what i did
You will need to connect it to your computer and restore it.
Delete the app then reinstall it. Upon opening it should find your saved game info and ask if you want to restore it. Click "restore" and your game should be back.
Your phone is fcuked
Restore your iPad by connecting to your computer and choosing restore. iTunes is an app you cannot delete.
Basically in-app purchase means in a free or paid apps you can find a button / link to add any extra features to an app for a fee.