I've found one better, someone shared this tool on reddit with me. It essentially creates a PEQ for your own ears and HRTF.
It will play 44 samples to you and you have to pick if it is quieter, louder or equal in volume. Its actually quiet cool watching it in live time create your PEQ based on your HRTF.
I've actually been struggling with EQ and dealing with listening fatigue and it wasn't until i used this tool i realised how much some iem's or headphones were fatiguing me. I was shocked to see it create almost a -9db correction at 7500hz on a certain pair of headphones. This peak shows up at 8khz on FR graphs but then i learnt about length mode issues and how we all vary and auto EQ is not a good answer most of the time depending on your anatomy.
This tool has done a lot more fine tuning that i ever could have done manually with my own ears. I'll just add it does mostly between 1khz and 12khz and doesn't touch bass nor upper treble. I think this area would be the most sensitive parts on the audio spectrum for a lot of people. Note it may give you more than 10 filters, it may not. You may need to interpolate if you do get more than 10 filters.
Check it out, its made a very very big difference for me. This is the first time in my life i'm experiencing fatigue free audio in my headphones and iem's.