Terrible POS app/extension. This thing will save your session and all tabs but will mix up all the URLs to your tabs so if you use it write them all down. I just spent 2 house getting all my tabs in my windows back since this thing saved whatever URL it wanted in each of my tabs. Useless crap there are much better add-ons just look. Should have zero stars as one is way too much for whatever you call this garbage.