Bought app for the main purpose of speeding up lectures I have to watch for school. Took a while to figure out how to speed up videos. Setting play speed does NOT work if u do Sidebar>Setting>Speed Setting. I wish there was a display bar clearly showing the play speed youre at and where u can choose to increase or decrease the play speed. BUT I found out that u can speed up you videos if you go to sidebar>settings> configure gestures>finger swipe. But other than that, I would have rated this app a 5! For me, finding an app that can save me half the time I would have had to take to watch lectures and one that allows me to watch lectures at 2x on my ipad is a life saver!! I mean I can now watch lecture on 2x and while I gym!! Or while on the bus! Total time saver! I havent tested this on the iphone yet tho. (Shame this only works on video lectures and not the voice captured lectures that accompany PDF slide shows, but thats not this apps fault...its the instructors...I wish more of them would realize/understand that students these days are overburdened with the amount of information out there and have to adapt by tightly budgeting their time...meaning if youre going to do a flipped classroom teaching style and make students watch like 3-9hours of pre-recorded lectures 2x a week before coming to class 2x a week to do a 1hr case discussions, its only fair they offer lectures that can be played at 2x or at least faster than 1x. I mean essentially the flipped class room model helps prepare the student better before they walk in the classroom but its not time efficient if the videos cant be played at 2x and thank god this app lets me do it with at least some of the pre recorded lectures!)