How to get the Cinema HD app

An app crashing is generally a sign of a poorly written app, or an app that hasn't been maintained to keep up with Roku UI changes.  Some of the more obscure apps on Roku are just one guy doing stuff when he has time and interest. 

If they haven't created an app specifically for Roku devices, there's no way to get it on your Roku.

The subject of your post doesn't match what you're asking, so are you asking why a particular app crashes?  I see dozens of apps with "Cinema" in the title, but nothing called "Cinema HD".  If you're asking how to get an iOS or Android app on a Roku device, forget it.