Still unpublished but it's there:
https://play.google.com/store/apps/details?id=com.sonarworks.truefi.mobile

I'm using it for awhile with some headphones when I listen to music on the road from my phone. I think it's pretty helpful to me. Normally my headphone, urbanears increases the basses but now it's tamed.

Features:
- Rediscover your music with Studio Sound
- Personalize your sound
- Listen from your own music collection or Spotify*
- 287 supported headphone models and counting
- Sonarworks technology promises 0.9 - 3 dB calibration accuracy

*Requires a Spotify Premium subscription

Cons:
I got roundly 300 music files in my phone but it doesn't show all of them. So its scan feature is not working properly. It can stop on some .mp3 files. I don't know why, because other players have no problem with the same file.

It had more cons and was totally useless for me when I install first, but they're fixing time to time. It gets better, also it's free.