Q&A: Do I have to re-purchase iPhone apps?

Q: Can you transfer apps purchased from an old iPhone to a new one for free or do you need to rebuy them?

A: You should not have to re-buy the apps. As long as you have the apps on your old iPhone synchronized with iTunes, they should re-sync to the new iPhone when you first set it up. Worst case, you can just contact Apple Support and they can do some magic to allow you to re-download the apps without paying for them a second time.