The XA1 iPhone app is for those DJ’s out there that really want to make a difference in the musical world (like Skrillex or Steven Aoki). This newly available app helps your musical ear with a real time spectrum analyzer, right on your phone. It doesn’t matter whether you will be doing mixing or pure audio work; this app will help you with its built in microphone and will show you a visible reference for your sound. Although this app costs $180, it can really benefit the next awesome DJ out there. Save those pennies and quarters, and make sure to put them in your piggy bank.