Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Manually sort folders by dewey
Rated 5 out of 5 stars
Works fine for me in 68.7.0 and is a very handy little app indeed.
If you follow paddingtonbear's simple instructions (ignoring any references to hunny, of course) it should even, I hope, have worked for Mozzied.
To create your own collections, you must have a Mozilla Add-ons account.