Rather than a direct "idea marketplace," you should target these entities based on your development stage:
Y Combinator : Known for their "Requests for Startups," they actively seek ideas in specific categories like AI-native services, healthcare administration, and climate tech. companies that buy app ideas
: An idea is only valuable if it is executed. Most investors believe the concept itself is worth very little compared to a working Minimum Viable Product (MVP). Rather than a direct "idea marketplace," you should