You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
The slacker app is gone in my 8.0 update and is replaced by whatever Personal Streaming Radio is. Some content such as the DNA shows is the same as or is from slacker. But it's not clear. If you look in Settings...then Apps, slacker is no longer there. It's not replaced by anything as obvious as Pandora or Spotify. Just not sure how Personal Streaming radio is related to Slacker, or is it some proprietary to Tesla?