Sure it is. I, and millions of others, use it all the time with for example Termux.

My Ratatui test app (Conway's Life) runs great in Termux. :)

	▲	emilfihlman 10 minutes ago \| parent [-]
		Termux is seriously amazing (with its quirks, of course)! Have you tried porting your test app to a web page? I'd really like to have a good TUI experience on the web.