Well, you are on to something. I don't have an apple but I played the test for my husband and my 3 year old son. They couldn't hear below what I could hear either. I guess anxiety is getting the better of me again. I have this really low tone that sounds like a lawnmower. It keeps getting louder and louder. Maybe it isn't related to how well I am hearing or maybe it is. But I guess that wasn't the best way to find out.