I wish people would write reviews within the context of the App. This is an SPL meter that works on you phone. IE a reference tool when youre caught without your pro gear. And as such it works very well. Also, theres a reason for a 105 db threshold on your iPhone. Someone is holding a phone to their ear as you transmit a +db signal. Granted Im sure no phone manufacturer would knowingly create a reciever that would reach beyond pain and damage thresholds. Cmon people think!
s0uls3arch3r about SPL