Perhaps a better way to go is to have something that does analysis of your own music library standalone as an entry point. That doesn’t require another person, which means most people on HN can try it on their own. If that’s shareable as a link, then not only can you send that as a reply on tinder (versus all this permission mutual stuff), it gives the viewer the ability to hit some big magic button that then finds the overlap with their own library, while also giving them their own stats separately.