Nice

This extension has done a huge job in helping me to concentrate studying at home. Being at home, I can easily get lost while navigating online losing the focus on studying. This app allows me to see that I need to focus, such that I can be productive during the day!

Simple, yet effective !!

Useful!

absolutely the best! Helps a lot with my productivity

Works perfectly, is very detailed and functional and clean.

Suggestion: consider adding a way to block troubleshoot mode in firefox as that allows you to reenter it without addons

Didn't notice the "allow override" option. It's almost TOO flexible! :) No complaints!

Awesome, has the most options out of every app I've tried so far.

This app has helped my productivity tremendously. Works perfectly.

This addon is a life(time)-saver! Always my first install on Firefox!

Really help to avoid stupid habits like opening facebook or other pages each time when you use browse.