Up front, I haven't even downloaded this app, so this is in no way a recommendation. But we've been listing a lot of new writing apps here, so I thought I'd mention this one:

https://panossakalakis.com/the-novelist/

The free version appears fairly robust. The Pro version is $45 per year.

I probably won't even give this a trial, because I've found that I do not like the apps that have such busy screens.