Good app with some issues.

Moving “Magnifying Glass” to new location, it becomes confused, skips around and DOES NOT MAGNIFY.
Switching Voices causes speed settings to no longer apply and races through document.
On plus side is incredibly fast switching to any Apple voices.
Interface is pleasant, accessible, and most features function well.
Excellent app for proofing documents.
For anyone with minimal reading and / or reading comprehension disabilities.
Inexpensive as well.

gerret63 about vBookz PDF Voice Reader, v1.2.1