Settings – Sound Meter — Noise Dosimeter Review

I've been looking for an app that measures loudness and allows me to have an "alarm" when it gets too loud. I want to use it in my special Ed class for students who are unaware of how loud they are sometimes. However, this app doesn't allow me to adjust the sensitivity or "trim", and so the alarm goes off even during a quiet whisper. Please allow the user to adjust this so that only truly loud sounds set off the alarm. See other decibel apps to know what I'm talking about, they all have this setting.
Review by Teach654 on Sound Meter — Noise Dosimeter.