Seems like a smart app. I have used it since few weeks. Quite happy but It has major interface flaws. Usability is mediocre and leading to many frustrations both in Safari and Chrome. I will ditch it now, but looking forward for the improved versions. I believe that AppSumo should verify throughly the usability and readiness of these apps . (Another frustrating example was SocialBee). I am not saying that I am ungrateful for all the good deals and smart apps I got from AppSumo. There should be a guy taking better charge of the quality checks. Otherwise I spend more time learning to use these softwares, getting high hopes, then smashing my Mac's keyboard every time I get an error or obvious UI & functionality flaws. Or maybe the quality check guy was on vacation, in which case I retract everything and wish everybody to Enjoy the Hollidays! :o)