In terms of my review.... I might not be the right demographic as im in my 40s but the app just works for me. My wife and I both have very busy diaries. My buddies all have their own packed work diaries.... and yet when everyone has the app, all the hassle has been removed out of finding date/time slots that just work and are free without having to go back and forth with messages (which you can do anyway through the app)....
its literally that simple. it works. it tells you when to meet and then sticks it in your calendar and you are done.