Rated 3 out of 5 stars

I liked this add-on previously, but it breaks my custom navbar in FF26.0 (i.e., removes icons of other add-ons & prevents reinsertion of same), so I won't use it again until this is fixed.

It gets 3 stars just because it's otherwise one of the best reminders out there -- I'll give it the other 2 when it stops breaking my navbar.

This review is for a previous version of the add-on (2.1.4.1-signed). 

Sorry for the troubles! Please try the latest update which has resolved these issues:
https://addons.mozilla.org/en-US/firefox/addon/reminderfox/versions/2.1.4.1