Carly is a handy OBD2 (On-Board Diagnostic) app for car owners to check the health of their vehicles.

This is a free OBD2 scanner and maintenance tool to diagnose problems with the electrical and mechanical systems of a car. It can be used by both the manufacturer and the buyer to check the condition of a vehicle before buying.

The app gives access to data, which is available as either a static display or in a more interactive and detailed manner.

Carly can:

Check data from multiple built-in ECUs (Electronic Control Units) that control everything.