Two ways to use dupay.
As a validator: post an idea, real people price it in one tap, no account needed. $0 is a valid answer with its own leaderboard tab next to the ideas people would actually pay for.
Become a Builder: claim an idea that priced well and inherit everyone who said yes. You start day 0 with real people ready to buy, not a blank inbox.
Most tools tell you if an idea is good. dupay gives you the people who already agreed.
