Annotation just doesn’t work!
Highlite only highlites the ENTIRE page. Opacity, not possible to select. Selection tools are too quirky to use.
NO UNDO/REDO … in other words, it appears they spent all their time on the GUI but forgot to make any of it work. And, the GUI leaves much to be desired. $5… go get a beer instead, you’ll be happier!
Wdav about
PDF Reader++