Can I invite to share my screen with iOS user? I have noticed Messages App in macOS has the option to share screen, I was just wondering if could use this to share my mac screen with user watching this on iPad/iPhone?
I have tried this, within Messages I clicked Buddies > Invite to Share My Screen and it started loading, but the user hasnt received anything. Any thoughts?
I understood you wanted to show something on your screen to a lot of people that are using iOS devices correct?

You also don't want them to have to install another app. 

The solution I've in mind is recording your screen with QuickTime. Save it as a small movie and send that movie by iMessage.