Steam reviews seem to highlight documentation and development issues! It is sad, the tool seems to be fine. Reminds me of aseprite (which is more 2d): https://www.aseprite.org/
A: "Nope. 2020 was terrible for me in terms of ability to work. SpriteStack has been rewriten from the ground - it's just terribly delayed because I did not expected things to go that way."
You can check his Patreon account for updates on the rewrite
It was a weird year, I'm a work from home guy, I love work from home, but work from home is not as nice without the option to break it up by working from other locations occasionally. I need an occasional refresh I think.