In the video, a person is holding a smartphone in their hands and using their fingers to interact with the screen. The screen displays a graphic of a house, and the person is swiping their finger across the screen to adjust the shape of the house. The person's movements are smooth and precise, indicating that they are familiar with the interface. The house graphic changes shape as the person swipes, suggesting that the app is capable of real-time adjustments. The background is a plain white surface, which puts the focus entirely on the smartphone and the person's interaction with it.