RCQ is a modern messaging application designed with a focus on privacy and security. It operates as a private messenger that eliminates the need for traditional identifiers such as phone numbers or email addresses, instead using a unique user identification number (UIN) for its accounts. This approach minimizes risks associated with SIM swaps and enhances user anonymity. The application is currently available in an open beta for iOS, with an Android version in development and a Windows version forthcoming. RCQ emphasizes user privacy by implementing sealed-sender end-to-end encryption, ensurin…