In my case, my wife complained of my snoring. I also have been tracking my sleep every night since like 2013 with Sleep Cycle, which records snoring. I never snored, until last December. It recorded me snoring 20-30 min per night, which is a lot. Plus, my dad has apnea. Plus my Apple watch notified me of a SpO2 < 90%. At-home sleep test indeed confirmed apnea!

Wife told me I was snoring. But then my dad was diagnosed with apnea, and I decided to get a test. So glad I did.