BigSpeak is a free app that uses machine learning algorithms to generate realistic audio from text. It offers features like speech-to-text conversion, voice cloning, and text-to-video conversion. The app provides both free and premium voices for natural-sounding speech. It also ensures enhanced security by encrypting and protecting user data. With BigSpeak, users can easily convert voice recordings into written text, transcribe meetings, and transform texts into engaging AI-generated videos. The tool aims to bridge language barriers and provide a seamless and efficient workflow for various communication needs.