It's the premium version of Ko-fi with some neat little benefits like monthly subscriptions, the ability to change the donation amount, etc.
I've been reading up on it, and I'm kind of digging it. When posting images to your "gallery", it's publically set, so there's no paywall or anything. But I still think it's pretty neat. I was considering it for side content.
What about y'all?
If you want to promote yours, post it here.