Aptx Notifier aptX (formerly apt-X) is a family of proprietary audio codec compression algorithms owned by Qualcomm. If you don't mind closed source codec, aptX has lower latency and is less of a drain on your battery than default codec (AAC) This package is used to display a notification when a device using aptX (bluetooth headphone typically) is connected. Its only use is to tell you that you use aptX bluetooth with the connected device.
Phones target this application