No longer works at all. Completely useless.

Sending crap back to their servers.

CAN NOT RECOMMEND! Significantly slows firefox for Android down!

this add-ons completely broken after Version 4.9.39, you can still download old one in release page of github if you want.

I have no idea how this is a recommended addon. When adding it to Firefox, a tab opens up with what appears to be a book they are selling, unrelated to this addon. I reported this, and I would advise you to steer clear.

Breaks mobile browser

rubbish

As well as it works for the chrome bois (chrome, edge, brave), on firefox it is a whole other story. it makes my videos and scroll grind almost to a halt, it is extremely laggy.
What's more, it modifies colors within photos and youtube - it desaturates the youtube video for example - its so frustrating that i prefer burning my retina on random light modes at this point.

Stole web data using typescript code

It extremely slowes down browser. Tested on multiple devices