Very Satisfied

I think EQu is a solid app and havent had any problems, only enhancements to my music library.

Pros:
-offers extremely precise sound enhancements for each song, or you can create pre-sets for various genres/bands/songs/whatever you choose.
-There are also pre-sets that come built into the app which are less in variation, but work the same as the iTunes desktop player/iPhone Music Player in that you simply choose one for any audio you have in your library.
-full customizable equalizer "board". Everything from the buttons and words to the spectrum, background and grid can be any color/color shade your little heart desires.

Cons:
-the only real problem I have with the app is that it wont play any of my music in the cloud. In other words, I have the option to apply the apps tools to my audio only if I have it downloaded to my phone. Luckily, I have an iPhone 6 Plus with 128 GB storage (or whatever the "useable" amount works out to), so even with pictures on my phone I can download whatever I want with my Apple Music subscription. Would definitely be nice if Apple allowed my cloud audio to be customized with an equalizer other than their own, but for sound and visual improvement/customization of downloaded audio from your iTunes library, Id definitely recommend giving this a try.

Oh, for what its worth I am not a music producer, nor do I probably even qualify as an Audiophile, but the audio I listen to is a very wide and varied set and I have enjoyed playing around with equalizers of all sorts for 20+ years. So take this review how you will, but I am confident that it should help, more or less, anyone over the age of 20 who has a heavy interest in not just music genres but also well produced music.

TWF13 about EQu - the quality equalizer, v2.2.10