This application is an on-board computer for cars operating on the OBDII interface using the SAE J1979 standard which can display the following parameters: 1) Instantaneous flow: per hour, per 100 km; 2) Car consumption per 100 km; 3) Spent gasoline per trip; 4) Distance per trip; 5) Engine speed; 6) Speed ​​of movement; 7) Engine temperature; 8) Voltage of the on-board network; 9) Average speed; 10) and much more .. In the application there is a travel log with export, multiple choice of dynam