Hello - I am the developer of a Mac crossword app called Black Ink: https://red-sweater.com/blackink/
Unfortunately this app is not even moderately accessible. I've wanted to add VoiceOver support for a long time but have been daunted by the challenges of presenting the 2D crossword grid, clues, letter values, etc., in a meaningful way that is not too overwhelming.
I'm committing to add VoiceOver support for the forthcoming 2.0 update and I am asking anybody who is interested to help advise me about accessibility features to join me on my company's Slack community. If you're interested you can read more on my blog:
Thanks for considering it!