Today I launched SimpleForm on ProductHunt and it's currently 3rd product of the day 😱. It is a minimalist, decentralized, encrypted alternative to google forms and typeform.
You can check it out here: https://simpleform.xyz/
Suggestion: Having Blockstack (or any other auth) signup is maybe affecting your conversion rate. I think you might want to put more features out front and defer signup for when the user wants to keep/save/continue using your service.