Abstract: This study aims to determine the value of centripetal acceleration using phyphox app on Android, in terms of experimental and theoretical. Android is connected to a PC via the same WiFi network or using tethering by entering the search address available in the Phyphox application, after connecting the android is placed at the end of the electric motor, then the electric motor is driven with a circular path. The data collection process begins by running the Phyphox application through a PC to collect measurement data, Data collected on android exports to Ms Excel has done averaging techniques, the obtained angular velocity, centripetal acceleration, and time. The results of the experimental analysis showed centripetal acceleration values obtained from android as = 9,768429 m/s2 and in theory obtained value as =9,768996144 m/s2 with erorr= 5,8040x 105.