A useful app but it still needs some improvement

This may be still only an advanced app to read aloud pdf pages. This helps me concentrate to read the enormous information, efficiently stabilize them as my knowledge and ease my eye straining.
However, there will be yet room of improvement. I like the crop feature added in this version, which allows us to skip the header and footer. If there is capability of cropping off the sides of the pages, we can avoid getting read the page numbers in some books. My second wish coming up to my mind will be the page gesture. In the current version, since there is capability of flipping over the page wherever I stroke my finger on the page, I have tough time to locate the red box to get to start reading aloud. If page flipping gesture is limited in the side of the pages, it will reduce my irritation. (E.g. Tap an allow or other gestures.)
They are my current thoughts about this app.

Ratsun about vBookz PDF Voice Reader US