My in-laws all have hearing problems (genetically?), and they said the prices are starting to reach the “keep a pair in the office, and a pair in the car” prices.
Have fun with yours, but I'm a bit more reserved in my "reviews" of them. I think it's a cool product, but I've seen quite a bit of pseudo-science on the internet when people discuss them. You really have to grasp sometimes to connect glucose levels to "feelings". If you're a healthy adult without diabetes, there isn't a lot of research saying "X is bad/good", and the signal that people act on is not always reflective of evidence.
It was actually entirely "painless" to apply. I braced myself, hit the button, and went "did it happen?" and saw something stuck in my arm. 100% couldn't tell. THAT SAID, I spent the next 3 days going "ughhhhhhh my arm hurts" so I must've hit something. I squished the flesh around a bit, and massaged my arm and it stopped after a few days. I can't tell if I got unlucky, or if this is just what "new thing in my arm" feels like.
It was painless, but painless does not mean no needle.
If your dad doesn't care about those, then he's not Apple's target demographic anyway.
Yes, they pick up sounds I don't normally hear, but I would compare the experience to listening to world through a cheap high-school PA system.
Over a few months my brain priced it in, and now I don't get that at all. Putting them in just means I hear better. It is like my brain has noticed the new sounds and interprets them before I hear them. The audiologist I spoke to said this happens to everybody, however the longer you've had untreated hearing loss and the older you are, the longer it will take your brain to adapt.
Thanks for your insight though - I was told "a couple of days" to get used to them would be enough.