KARR BT Dealer is an Android app developed by Webhouse Software Systems, available for free in the Business & Productivity category. This app is designed to process QT Alarm fitted vehicles. It requires Bluetooth and Location services to be switched on, and your location may be used in the background.

With KARR BT Dealer, you can easily connect to the unit, lock and unlock the vehicle, and process customer information. The app's user interface is simple and easy to navigate, making it convenient for the user to access the required features. However, the app lacks some essential features that would make it more efficient and user-friendly. Overall, KARR BT Dealer is a useful app for those dealing with QT Alarm fitted vehicles.