One thing about the iPhone microphone. I had a beautiful day the other day here with some light drizzle and the sea waves were rocking nicely it was a great sound and the beach was empty. Great feeling. I wanted to record this but I only had my iPhone - was just walking in the beach. So neither the default recording app of the iphone and neither any of the ones I tried, could capture the ocean waves or the sound of the drizzle. I had previously (intentionally) set out to the beach with the intent to capture audio and did so with my Laptop + external mic. My conclusion is that unfortunately that is the way it has to be, and that it's not possible to capture audio on a whim as is with photos.