The demo site works on mobile if you let it load the necessary content so if you're speaking from a web dev point of view: definitely.

As for the addon, on Android you'll need to install an unstable version of Firefox and configures a custom addon list in an addons.mozilla.org account that includes it so you can download it.

On iOS there isn't any option to download addons as far as I'm aware. On mobile Linux environments everything should work like on desktop.