How do I restore my previous purchases?

1. Tap the Add-Ons tab bar item
   
   
   
   
2. Scroll down to the "Transactions" section and tap the "Restore" row and follow any instruction provided by Apple, to restore your previous purchases.
   
   
   
   
3. Since the process may take a little while to complete, check the purchase history to confirm all your purchases have been restored