I would love to give this app 5 stars but it seems that the issue of taping on the top of the menu bar and having it jump to the top has not been fixed. It is horrible when you are working on a 100± PDF and you accident touch the top instead of the icon and you lose your place.
If you can fix this problem for undergrad and grad students alike I would love to change my review to 5 stars.
inversedarkfox about PDF Expert - Editor and Reader, v5.5.7