Are your listening levels healthy? Doing damage?

I find that I can enjoy low levels just as much as high levels. Actually, low level requires more attention, and I get further into the music.

When I'm slightly or more than slightly drunk I pay my system louder. If I plug in a small guitar amp I leave in my listening space to play along with something on a pretty Les Paul I leave out (because it's so pretty...all my acoustics guitars stay in their cases, as do my other electrics) things can get louder...this has been going on for decades as has live gigging, so don't ask about my hearing as I'm defensive and get testy...

@macg19 

Yes, tinnitus is "associated" with hearing loss, but there are other schools of thought as well. My hearing is typical for most 65 year olds, rolling off at 12KHz. Yet, like many, my tinnitus seems to manifest itself as a continuous sine wave at 8KHz. Why is unknown. 

I can only tell you that from day to day my intake of coffee and alcohol is usually the same every week, yet my perception of the volume level fluctuates considerably. My otolaryngologist, Angelia Natili, MD, FAAOA, was the one who told me that stress can indeed affect the perceived levels you hear. 

The competing school of thought regarding tinnitus suggest that it has absolutely nothing to do with hearing loss and instead is a brain/nervous system interaction wherein the brain "hears" the nervous system. Still, why it manifests itself at 8KHz is a mystery. 

Currently there are no legitimate therapeutic treatments. The main thing being offered are "masker hearing aids" that provide a "sssshhh" sound to cover up the tinnitus. I've decided to not go that route. There are also lots of "snake oil" treatments out there (just do a search on YouTube and you'll find a bunch of them). 

More research is needed for this. There are millions of sufferers around the world who could benefit. Just in the U.S. alone, 15% (50 million people) have it. 

There are a very few actual treatments going through the clinical trials. I've already asked my otolaryngologist to let me know if and when they participate in such trials. I want to be in on them. 
 

@ddafoe +1 on the Reed Instruments. Is $180 "expensive"? Not if you care about your hearing. That’s cheaper than many spend on a decent set of RCA interconnects.

The problem with many of these phone apps is that you have no way of knowing if they were matched to the microphones and preamps in these devices. That one guy above, Jon, says the one for his specific iPhone is "close" to a calibrated SPL was fortunate. Good for him. Perhaps Apple commands such a market share that the developers could spend the time getting it right. 

I doubt all these developers take the time to get real data on the myriad of phones out there, especially Android except for certain Samsung phones. And then, where do they get this information?

How do we even know the frequency range and response of these microphones and preamps in our cell phones. I mean they are mainly designed (and perhaps even intentionally limited) to pick up and amplify human speech (85Hz to 255Hz), not music. In telephony, the usable voice frequency band ranges from approximately 300 to 3400 Hz. Note that 300Hz is indeed above the fundamentals, but they say, "However, enough of the harmonic series will be present for the missing fundamental to create the impression of hearing the fundamental tone."

So, your phone likely has a sampling frequency of 8000Hz in order to cover decently up to 4000Hz, and whether the microphone goes any higher (or lower than 300Hz) with a decent linear response is open to question and experimental tests.

At least if you buy a legit SPL meter (a good one) they let you know the frequency range it covers (31.5 Hz to 8 kHz in the case of the Reed Instruments) and its accuracy (±1.4 dB - which isn’t that good but "decent").

My friends laughed at me when, even in the 60's and 70's I'd put earplugs in whenever my band played, or when I'd go to a concert. Who's laughing now?

I'm the only one that doesn't wear hearing aids. Hypersensivity has paid off.