What I don't like about page turning is that it is not clear whether the page turned to previous or next page. I can't be careful all the time to tap correct zone. The page turns but on what direction?
When I lost the page, it gets a bit more difficult to find it by carefully moving forward and bacward. I remember the last sentence I read and this sentence was at the bottom of the page. However, when I was moving forward and bacward looking for this sentence at the end of the pages, the sentence change its place. Finally, at last, I find it in the middle of the screen. This occurs especially if there is a page break somewhere.
Moreover, I open top menu at the top and change remeining time display at the bottom unintentionally. It is hard to get used to. Besides, vertical scrolling is not supported, just left and right.