15 months after the streaming service hit Android and desktops.
Amazon's Cloud Player is a streaming and storage service that offers Amazon customers 5GB worth of memory to upload and download music, as well as create playlists and manage their content.
The service was originally launched in March last year across partner OS Android's smartphones and tablets, as well as desktop PCs, and now the retailer has extended the app's reach to iPhone and iPod.
Steve Boom, VP of digital music for Amazon, said: "Customers tell us that they want access to all of their music, wherever they are, and on all of the devices they use.
"By bringing Cloud Player to iPhone and iPod touch, we now have the most widely compatible cloud playback solution available, giving our customers the ability to buy once and enjoy their music everywhere."
Of course, Apple also has its own cloud service, iCloud, which has over 100 million users.Given that iOS users are among some of the most loyal in the smartphone space, it will be interesting to see whether Amazon is able to wrestle any of them away from the rival platform.