Not OP, but I bought the $3 app. When annotating is active, you're drawing on th...

jagged-chisel on April 22, 2020 | parent | context | favorite | on: Show HN: I made a macOS app to let me draw on the ...

Not OP, but I bought the $3 app. When annotating is active, you're drawing on the screen and other content is not interactive. When you deactivate annotation, the annotations vanish and other content is now interactive.