Good app for classroom – Noise Down - sound manager alarm app Review

The app itself is a good tool for the classroom. My only complaint is that it stops the first time the buzzer is set off. I give my preschoolers three tries before they need to find a new quieter activity. Also it seems to turn off when the screen is off so it flys through battery. Could use some improvements but still the best noise app I've found so far.
Review by Ris5 on Noise Down - sound manager alarm app.