KARR BT is an Android application developed by Webhouse Software Systems that allows users to remotely lock and unlock their vehicles using their smartphones. With this app, you no longer have to worry about forgetting to lock your car or fumbling with your keys in the dark.

One of the most convenient features of KARR BT is the ability to navigate to your last lock location. This means that if you forget where you parked your car, you can use the app to guide you to your vehicle's location. Additionally, the app allows you to adjust the sensitivity of the alarm on bump, giving you greater control over your car's security.

Overall, KARR BT is a free, easy-to-use app that provides a convenient way to control your car's alarm system. Whether you're in a rush or just want to simplify your life, this app is definitely worth a try.