I guess it's good enough to show. I've got most of the issues sorted out to the point that the site is already usable for demo purposes. There are still a lot of all those little things I'd like to iron out. There is also still a lot of work on the backend side. But the basic functionality is there and it doesn't look half bad.
I don't think there will be better time to release it to the wild. If I keep it to myself I just keep refining it over and over again. Trying to reach perfection is sure way of never releasing anything. Trust me, I have plenty of those projects.
So if you will, tell me what you think. Everything should work on the surface, but things might fall apart any moment still. There are also still a few essential features missing (for example the streak count) and there is barely any security implemented. If you know what you are doing you could write as any user, or just delete everything. Also anything written there will be deleted at some point, probably including user accounts before the real release.
So, without further ado: https://writestreak.web.app