Sufficient for highlighting during presentations.

The application works as specified and doesn’t get in your way once you learn a few keystrokes. While using the app, I could DOUBLE-CLICK with my mouse which presents a text window that I can type to Highlight will add text to the sceen - nice touch! I would like to recommend (feature request) that the ‘mouse’ change from the black arrow into a yellow arrow (black outline) or a small highlight pen as indication that it’s active, without having to look for the menu on the left of the screen, but otherwise, it’s an inexpensive app and very useful.
[I am on a Mac Pro using macOS Sierra].

gwexler about Highlight, v2.3.1