If you're an audiophile or a music producer, you know how important it is to have a reliable tool to test and create sub-bass frequencies. That's where the Ultra-Low Subwoofer Bass Pad & Bass Tester by Infrasonic Technologies comes in. This free Android app offers over 20 features for your car stereo, home theater, and subwoofers that add the lowest, most intense bass you've ever felt.

One of the app's main features is its frequency generator, which allows you to create your own sub-bass beats for hip hop, dubstep, pop, rap, trance music, and more. The app also includes hundreds of subwoofer test tones, subsonic sound effects, and beats. It's a great tool for testing subs for Car Audio, Home Theaters, and so much more.