AB Link is an Android application developed by Bluetrum, available for free in the Utilities & Tools category. This app is designed to provide interactive control of Bluetooth devices such as speakers, car kits, and soundbars. With AB Link, users have complete control over music playback, as well as the source of music, including UDisk, SDCard, Bluetooth Music, FM, and AUX. Additionally, this app allows for equalizer control, color control of the light, alarm control, record control, FM, and AUX control, making it an all-in-one solution for controlling your Bluetooth devices.

The AB Link app is user-friendly and easy to navigate, with a simple and elegant design. Its functionality is impressive, as it allows for complete control over various aspects of your Bluetooth devices. The app is perfect for those who want to have complete control over their music playback and other device features. Overall, AB Link is a great app for anyone who wants to take full advantage of their Bluetooth devices' capabilities.