I’ve measured the work I get done over sprints where I listen to brain.fm and where I don’t, and I usually get 2-3 more cards done of weeks that I do.
Not a scientific measurement, but it is what it is.
Edit: I just checked my email and (in the spam folder) was an email from them with a link that works for 3 days. I'm trying it now.
Granted, I got my account with a lifetime subscription back when they were just spinning up, but I’ve used them pretty consistently since then.
I WFH so I just found another way to play music, but it was tempting to point out to my boss (who I otherwise quite like) that he had just told me that I shouldn't be using a reasonable accommodation for my disability that costs the company nothing, lol.
To suffer from ADHD is to suffer alone.
The world does not care for us and does not care about us. The world would rather attempt to hammer us screws in than try and use a drill.