Jhakaas Messenger is a social messaging app that allows users to communicate anonymously without sharing phone numbers. It offers features for one-on-one chats, group chats, community discussions, file sharing and more. The app uses technologies like MQTT for machine-to-machine communication, seeding for optimized file sharing, and frameworks like Node.js, React Native, MongoDB and AWS. The developer outlines a 10 week timeline to design, develop and launch an MVP using an agile development approach.