I have the Sonarworks Sound ID Reference app on my phone and computer for streaming. I find that it works rather well, and does improve the overall sound when using it with supported headphones.
Would like to get feedback from users.
I used it a loooong time ago and liked it, but I’m guessing it’s changed a bunch
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The supported headphones list has grown a lot. Think it’s up over 500 now.
The A/B comparison allows for finer tweaking with the headphone curves.
I used it until i quit using a computer as a source. I have not tried the sound id version, but i liked the effect on the sound with the one I used, but i had constant problems with getting it to work properly. Probably operator error. 
I also used it some years ago but their eq did not fit my ears and taste so i switched to Equalier apo+Peter user interface which works much better in my opinion.
cheers
Mike