The OBDLink app is a powerful diagnostic tool that can turn your phone or tablet into a full-fledged scan tool. It is designed to work exclusively with a range of OBD adapters, including the OBDLink MX+, OBDLink LX Bluetooth, OBDLink MX Bluetooth, OBDLink Bluetooth, OBDLink MX Wi-Fi, OBDLink WiFi, OBDLink EX USB (with Android 3.1 or newer), and OBDLink SX USB (with Android 3.1 or newer). It is important to note that the app will not work with any other brand of OBD adapter.

With the OBDLink app, you can read diagnostic trouble codes, clear the "Check Engine" light, check emissions readiness, estimate fuel economy, and much more. The app offers a range of key features, including the ability to check and clear diagnostic trouble codes, read freeze frame data, display real-time data (over 90 parameters!), and create customizable dashboards. It also offers emissions readiness for each US state, fuel economy MPG, l/100km or km/l calculation, multiple trip meters, and the ability to log data to CSV format (compatible with Excel).

Other features of the OBDLink app include the ability to retrieve vehicle information including VIN number and calibration ID, oxygen sensor results (Mode $05), on-board monitoring tests (Mode $06), in-performance tracking counters (Mode $09), GPS tracking (plot vehicle parameters on a map in real-time), and a full diagnostic report that can be e-mailed. The app is available in both English and Metric units, and offers free unlimited updates and is ad-free.

In summary, the OBDLink app is a powerful diagnostic tool that can help you diagnose and fix issues with your vehicle. It is designed to work exclusively with a range of OBD adapters, and offers a range of key features including the ability to read diagnostic trouble codes, clear the "Check Engine" light, check emissions readiness, estimate fuel economy, and much more. With its customizable dashboards, real-time data display, and GPS tracking, the OBDLink app is a must-have for any car enthusiast or mechanic.