DriverTuner is a free "system optimizer" app with paid features. It has a simple, primarily-white interface that uses solid blocks of colour to give the user a good idea of what the app has found. It works by detecting the drivers installed on a computer and determining if they are outdated or not. Some antivirus software, such as Malwarebytes, considers it "potentially unwanted" and will initially prevent it from being installed, and it does frequently warn the user with sound and notifications if it determines their drivers are out of date.