Dラボ is a video app where the popular mentalist DaiGo explains various aspects of psychology. With thousands of videos available, users can delve into a wide range of psychological topics explained in DaiGo's unique style, using humor and evidence from global research to make psychology easily understandable.

The app features a simple UI with intuitive placement of essential functions, making it easy to navigate without the confusion often found on other video platforms. Users can also benefit from recommended courses based on the viewing statistics of other users, a chapter feature to save favorite parts of videos, and additional functionalities like suggestive search, playback speed adjustment, background play for commute, offline video downloads, and data-saving audio-only playback.