Great add-on, the simplicity is what makes it great. I hate "productivity" pomodoro apps that categorize your work, add a million different features, and make everything more stressful. This add-on is designed exactly how the pomodoro technique was founded, a simple timer and that's it.

I do wish there was a way to pause your timer if you have to go to the restroom really quick or something. I also wish there was a way to change the notification sound and volume. Just a few options would be nice.