Im a new iPhone user and have used Spotify, Pandora, Jango and others ...
IHeartradio runs without the app being present. Ive closed the app only to find music still coming through the phone and the only way to terminate it was turn off the phone.
Selections are immense and such a vast expanse of music selections. Working my way through podcast section now.
Buffering is less than acceptable even on LTE.
Needs work but works well
Zhabra about iHeart: #1 for Radio, Podcasts, v8.1.0