Apps similar to ARC System include Sonarworks. Other options are Dirac Live® for Studio and Clearroom. In total there are three apps like ARC System for Mac, Windows and Linux.
Using Sonarworks, you can measure and calibrate your speakers to reduce the acoustic influence of your room. You can also use it for headphones, using pre-set profiles built in, or by sending your headphones available in for calibration.
Dirac Live for Studio is a set of audio plugins that performs sound measurement and calibration. In addition to the standard frequency calibration, it also does timing (as to time align) and does not require special Dirac compatible hardware.
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Clearroom measures your room with any measurement mic that has a calibration file, scores the measurement before it corrects anything, and corrects what you hear towards a target you choose.
