I have iTunes on my iMac. I have like 500 apps on the iTunes. When I plug my phone into the iMac, it syncs all the apps to my phone. I only want to sync one of the apps because that particular app is no longer available in the App Store. The app is Pimp Your Screen. Can you give me step by step instructions because once the apps from iTunes start syncing, I have to eject and restore my phone or it will be a big mess!