Google have improved the Google Play Music app for the iPhone introducing some new features. With version 22.214.171.1240 of the app there is a new gapless playback feature, you can download subscribed playlists to the device and a new view of current downloaded music. There are also a couple of bug fixes in the update which is still iPhone only (you can run it in x2 mode).
With Google Play Music you can upload up to 20,000 songs from your collection for free and subscribe to Google Play Music All Access all you can eat music subscription then stream of download them to the iOS or the Android versions of the app.
The app is free from the Google Play Store.
What’s New in Version 126.96.36.1990
New: Gapless playback
New: Download subscribed playlists
New: View current downloaded music
Improved: Listen now recommendations and the ability to dismiss them
Fixed: Loading of music library after update
Fixed: Various bugs leading to crashes
<3 Google Play Music Team