ADA H4, whose production, software and robot interface studies were developed by AKINROBOTICS, is taking its place in everyday life. Ada H4: Hostess Robot, the six prototype of the ADA series of social robots, has a wide range of functions from kitchen and fair services to obstacle detection with a series of technical features. Among these fatures are selecting the closest person to provide brochures, walking, talking, seeing, obstacle detection and a two-axis movable head. These technicial features have enabled the robots to successfully perform various tasks and provide users with an interactive experience. The project's start date was determined as September 1,2016 and it was successfully complated on October 11,2016. The weight of ADA H4: Hostess Robot is 40 kg and its height of 150 cm. The battery technology used in the robot is lead-acid (12V) and it has Turkish speech language capabilities but also with its ability to offer a more flexible and interactive experience. ADA H4: Hostess Robot, having complated its active duties is now on display for visitors at Istanbul Robot Museum, opened by AKINSOFT and AKINROBOTICS on December 15,2022. You can access the ADA H3: Hostess Robot images from the page