The best thing about TuneIn Radio Pro is its DVR-like functionality. While listening to music, you can pause, rewind, and even record radio content for later playback. Of course, you will be limited by the amount of storage space you have available on your device, but I found that around 3 minutes of radio content took up less than 2MB of space.
Along with the "DVR" controls, the Now Playing screen displays station and track info, as well as album art if it's available. From here, you can also swipe left to related stations, recent stations, Favorites, and a Twitter widget that lets you join in on any social media banter mentioning the TuneIn app. Lastly, there's a share button up top, and in some cases, link to purchase the song on Amazon MP3 (provided you have the app installed).