READ THIS BEFORE YOU BUY!!!

You may have noticed the large number of 1* reviews, some complain about crashes but a large number complain about the inability to play iTunes Match music. Let me tell you upfront: YOU WILL NOT FIND A SINGLE EQ CAPABLE MUSIC APP ON THE APP STORE THAT CAN PLAY ITUNES MATCH OR THE NEW SUBSCRIPTION BASED ITUNES MUSIC. This is because these songs are DRM (Digital Rights Management) protected. Basically they (both Apple and publishers) dont want an app to be able to copy (pirate) the music data. EQ capability exclusively revolves around the ability to read and manipulate audio data, so these songs are off limits. If you want to EQ music on iOS devices, you must PURCHASE THE SONG.

Also, I have not experienced any crashing during my 10+ hours of use.

Now with all that out of the way, this app is great at doing what it advertises: providing uncolored, neutral EQ presets for a vast amount of different headphone models. It will not make your earpods sound like Sennheisers, but it can make an ok pair of headphones sound good and a good pair sound great. Their headphone preset database is pretty expansive and updated regularly. It made my Jaybird Bluebuds X sound much better than without EQ.

Good job Accudio!

the1mysticgod about Accudio™ Pro