Mostly good but sometimes suffers because of Firefox updates that stop it working.

ok

Doesn't cover Asian languages at all which is no good to me. It was also incredibly slow at appearing at first and requires manual selection of a language in order to work. What's the point of letting it access all websites if it doesn't auto-detect the language a site is in?

It is very good, but it could be a lot if I had any way to hide the upper bar and make it more discreet

On my phone, this is working flawlessly. But on my work windows 10 it displays a (i) and no information, just plain totally broken but I read that I'm not alone so I hope it will be fixed for the windows 10 version of firefox eventually.