iOS Code: MKiCloudSync – Sync your NSUserDefaults to iCloud with a single line of code Just wrote this class, MKiCloudSync (100 lines of code) that auto syncs your NSUserDefaults to iCloud. How to use? All you need to do is to enable iCloud key value store entitlements, copy the files and forget about the rest. Step 1: Enable iCloud entitlements for your app. This is easily done in Xcode 4.2.1 by