Apple has begun offering iTunes credit to customers who purchased both a new iOS device and iPhoto, iMovie, or the iWork suite of apps after September 1.

On September 10, Apple announced that the aforementioned apps would be free to customers purchasing an eligible iOS device. Some users, though, had purchased eligible devices earlier in the month and then gone on to buy one or several of Apple's productivity or creativity apps. Now, the iPhone maker is sending out notifications to those customers that they are eligible for an iTunes credit in the value of the total cost of the apps they purchased, according to MacRumors.

The iTunes credit can be used toward the purchase of any content in the iTunes Store, be it an app, an iBook, or music.