This is the author's 3rd or 4th attempt to launch a product in this niche, Interactivedemo.ai (ProductHunt launch), demo.fun (link in their profile), a chrome extension with the same name (never took off), etc. I got this all from their Twitter profile

I'm a bootstrapped software developer myself, so I can't decide if I should admire this or flag this as spam. But you're probably right, we're getting a "pricing" page very soon.

I do want to charge but if you have valid use cases and will function as a beta-tester I would work out free service technically forever. I am open to discussions about this. I'm still experimenting and nothing is set in stone, but I actually quit my job a while ago, and this is what I want to do full time. I have a bit of runway.