Make getting the first users less lonely.

Founders constantly ask communities the same question: “Who wants to try my product?”

And other founders reply with the same answer: “I'll try yours if you try mine.” That informal trade happens thousands of times a week in Discords, forums and DMs. It works — but it is unstructured, unverified and easy to walk away from.

Sign4Sign turns that exchange into something dependable: discoverable projects, published signup requirements, verification by the project owner, reputation that follows you, and a mandatory return obligation with a deadline.

We deliberately do one thing. No backlinks, no guest posts, no likes, no follows, no freelancing. One genuine signup, traded for one genuine signup.