Apple does this, the Health app gives me a “headphone audio level” historical graph along with its opinion of what’s safe. I’m guessing they only do that with t

Apple does this, the Health app gives me a “headphone audio level” historical graph along with its opinion of what’s safe. I’m guessing they only do that with their headphones where they know the volume-decibel response, as you say. Same with “environmental” sound levels, measured by my watch I believe. I’ve received warnings for environmental levels, so I assume it’d give me warnings for headphone levels if appropriate.