See this app be usable on a Windows tablet.

Although this app works well on a Windows PC with a mouse, as far as highlighting text goes, it doesn't work well on a Windows tablet other than just reading. Can't highlight by touch - try it and it jumps ahead 3 chapters. I have a Surface 3 with a pen - I actually can highlight with the pen, but without the pen or a mouse forget it. Can't understand why the developer has not made it tablet friendly.