CarLink Car Interface is a free application developed by Omega Research & Development Technologies Inc. for Android users. It is a smartphone interface that allows you to control your vehicle's convenience and security features from virtually anywhere in the world. However, this app requires an Omega-CarLink system to be installed in your car for it to work properly.

With CarLink Car Interface, you can remotely start, lock/unlock, or open your car's trunk safely and securely from anywhere in the USA. The app supports Omega's Excalibur and Crime Guard brands of remote start/security systems. Additionally, you can receive alerts and notifications if your vehicle is violated when installed with any compatible Excalibur or Crime Guard Remote Start/Security System.

Overall, CarLink Car Interface is a great application for those who have an Omega-CarLink system installed in their car and want to control their car's convenience and security features from their smartphone.