I want writing streak to be a simple tool that does one thing very well, so I tried to avoid adding a lot of extra functionality.

I have built a project that I think you might find interesting: https://fictionhub.io/

It's a writing community where you can post stories, share and receive feedback, etc.

The idea of making it centered specifically around the daily writing exercises, prompts, etc is interesting. I might be able to use the fiction hub platform to make something like that, I'll need to think about it.