Formuler devices are great for the elderly and for people of limited intelligence as you can set them to boot straight into the iptv app and it's a simple interface/epg, the remote is "traditional" style (ie looks like it's from the 1980s) so owners don't panic when they see complicated features like backlit buttons etc, and they can't be used to run complicated modern apps like Netflix, Prime etc so it's a really simple, straightforward device for iptv. I'd highly recommended them if you're easily confused or prone to panicking with modern technology.
I used to own a formuler device myself and unlike many, I'm not ashamed to admit it. We all started somewhere and it was an OKish entry level box when CS went tits up and the zgemma turned into a doorstop.