Lately, I've been redoing the entire writing screen in Gorby [1], trying to make it more useful and more pleasant to use. I've added better themes and brought some features and text checks from other parts of the app into the writing screen as well. I'm also working on integrating Harper.js for grammar checks. So far, I've only included it in the desktop app (yeah, it's built with Electron…), and it seems pretty decent. The desktop app itself is new as well. Generally, I'm trying to make the app useful for writing, not just for finding possible improvements in the text or getting its readability score.
I also made some improvements to my support workflow app, Support Toolbox [2], but haven't released those yet (hopefully this week). It now also includes text expansion, which I was really missing from my workflow and had been using another app for previously. At this point, it does pretty much everything I need it to do. There are some smaller improvements I need to make, but even if no one else ever starts using it, it helps me tremendously at my day job!
[1] - https://gorby.app/