FourStroke for iOS

FourStroke is a comprehensive utility application designed for real-time vehicle sensor analysis via the OBD2 port. This free app allows users to connect to their vehicles using a third-party OBD2 Wi-Fi or Bluetooth adapter, offering essential functionalities such as pulling and clearing engine codes without any cost. It supports a wide range of vehicles globally and provides valuable diagnostics for vehicle performance, making it an accessible tool for car enthusiasts and everyday drivers alike.

The application transforms an iPhone into a heads-up display, showcasing vital vehicle metrics like RPM, coolant temperature, vehicle speed, and more. Users can quickly diagnose check engine lights by retrieving error codes and their descriptions. Advanced users have access to in-app purchases that unlock additional features, including a dynamometer for measuring horsepower and torque, along with a 1/4 mile analyzer. However, it's important to note that while FourStroke provides extensive capabilities, it does not support ABS codes or proprietary commands, and sensor compatibility may vary by vehicle.