Amazon on 12 June released a version of its Cloud Player for the iPhone and iPod touch.
The free app is available now via the App Store. It will let Cloud Player users stream, download and manage their music in the cloud; no downloads necessary. Users can also import MP3s that were purchased from Amazon and add playlists already on their iOS devices.
When you first download the app, Amazon will ask you to sign into your Amazon account. If you haven't added any music to Amazon Cloud, the app will ask you to start adding songs from your computer via the Amazon Cloud Player website, and then re-sync via the app. You can also play music that's already on your iPhone or iPod touch by tapping the "Device" tab.
The "Auto-download Amazon MP3 purchases" function is off by default, but you can switch it on via the Settings option to automatically sync the songs you buy via Amazon MP3.
There's also the option to only download and stream when your device is attached to Wi-Fi so you don't eat up all your data.
Amazon customers automatically receive 5GB of free storage for their music on Amazon Cloud. For a limited time, those who purchase additional storage will also get unlimited space for MP3 and AAC (.m4a) files at no additional cost, Amazon said.
Amazon launched its cloud-based suite of services in March 2011 with Amazon Cloud Drive, Amazon Cloud Player for Web and Amazon Cloud Player for Android. Several months later, Amazon said it would allow customers to store an unlimited amount of music on its Cloud Drive and Cloud Player, provided customers purchase a storage plan. Amazon also announced a Cloud Player app for the Apple iPad.
Additional storage plans start at $20 (£13) per year for 20GB.
The Amazon Appstore is expected to reach Europe this summer.