Most apps should work just fine on new versions of Android. That is, if you have a forgiving definition of the words "most" and "just fine." Sky PLC's Sky Go streaming app for the United Kingdom and Ireland was one of a few that ceased to function on devices that came with Lollipop or received a subsequent software update. The latest version of Sky Go works with Android 5.0, at least according to the "What's New" text for version 4.1.2.
Enhanced integration with Chromecast, including a new "Post-play" experience to easily continue watching at the end of TV episodes.