https://play.google.com/store/apps/details?id=com.carfax.cvhr&hl=en - Carfax can be a great tool to learn more about a used car. Get a Car fax history report on any registered vehicle by entering its VIN or license plate number at the carfax.com website. The car app history report includes details on possible engine and frame damage that would identify the car as a lemon car.