Listnr is a dating app that uses voice as its primary mode of communication between users. It allows users to create an audio profile and exchange voice messages that auto-delete, similar to Snapchat. The app currently has 3,000 beta users across several countries and is conducting paid market tests in New York City. Listnr aims to differentiate itself from competitors by focusing on trust, avoiding commoditization of users, and using voice messaging instead of text, which conveys more emotion. The founders plan to scale the app's user base to 100,000 in New York through targeted Facebook marketing and raise $10-20 million in funding.