Jupiter Signup
The signup form you build by describing it.
Visit Website
June 28, 2026
Shipped Jupiter Signup at jupitersignup.com
Every signup tool I tried hands you a form builder: drag fields, arrange sections, fight a template. I'd been running real signups on different form tools and building and editing the form was always the slow, annoying part.
So I built the opposite. You describe the class, event, or RSVP in chat and the AI authors the entire form, then you change it by saying what you want different ("add a bulk discount", "make it feel premium"). No builder UI at all.
A form can look like anything and a price still can't be faked. Payments are a mode, not a separate product: free, off-platform (Venmo / Cash App / PayPal / Zelle / cash), or real cards through your own Stripe.
1 Comment
I think the interesting shift isn't AI-generated forms—it's removing the idea that people want to build forms at all. Most users aren't trying to design a workflow; they're trying to get registrations open as quickly as possible. Treating the form as the output instead of the project feels like a much stronger mental model.