Is this add on still in developpement ? The delay mode dont work for me, it just freeze and block the site for the rest of the day o_O ...But thank you

Works fine, but could use some of the bells and whistles from Stayfocsd in Chrome. I'd particularly like a Nuclear option.

A handsome, spartan alternative to StayFocusd and LeechBlock. It's not as full-featured as either - most notably, there's no Nuclear Option-like functionality or complex week-based schedule blocking. However, since I only use Firefox every now and then for specialized tasks that Chrome can't do, LeechBlock would be massive overkill, and Monastery is perfectly adequate for me.

It is a bit annoying that I can't block Firefox pages, so there's nothing stopping me from disabling Monastery in moments of particular weakness, but that can be fixed with another add-on: https://addons.mozilla.org/en-US/firefox/addon/public-fox/

P.S. - developer is prompt, polite, and responsive.

The app seems to be a good one, with the functions I need. But there seems to be a huge bug. I wanted to try it with 15 mins first but after a minute, I lost the access and can't seem to change the permitted time even after 24 hours. I am on the verge of disabling the app, unfortunately...
EDIT: It actually works now - almost. I think the 24 h problem was that I was trying to change the setting right after I first lost access after that one minute, so it was actually probably 24 h from the time I last changed the settings, or something similar. Still, I can't seem to change the amount of time even before I run out of time. Right now, I have 1 minute and something left and I feel I still need more time to read some things on Facebook, so I wanted to make it longer, but even though the settings say "saved", the clock still shows the same amount of time.