HBOgo works on my iphones/ipads (all on ios10), and all my android phones/tablets. I use the HBOgo to chromecast to a TV without a set top box.
Older versions of android (probably Jellybean and before) may not work with earlier than Lollipop (5.0) well. (google search shows 4.1 is minimum but I have some older android stuff that does not offer the HBOgo in the Play Store.
HBOgo came out with a new version I installed on 1/25/2017.