Quiet Classroom - Noise Alarm

FunDip

In-app purchases

About this app

Noise Monitor is a real-time noise meter and sound level alarm that alerts you the instant a room gets too loud. Set your decibel (dB) limit, press start, and get an instant alert when noise crosses it — perfect for classrooms, sleeping babies, snoring, and quiet offices.

Unlike the old "too loud" sign, Noise Monitor watches the sound level for you and reacts automatically — with an alarm, vibration, screen flash, or a silent notification.

WHY YOU'LL LOVE IT
- Live decibel meter with a clear, easy-to-read gauge
- Set any noise threshold — the app remembers it
- Instant alert when sound goes over your limit
- Auto-stops when the room goes quiet again
- Runs in the background, even with the screen off

ALERTS YOUR WAY
- Loud alarm, gentle chime, vibration, screen flash, or silent log
- A calming sound so you can alert without waking a baby
- Volume ramp that starts soft and rises gently

BUILT FOR REAL SITUATIONS
- Classroom — keep lessons calm and quiet
- Baby / Sleep — gentle alerts that won't startle
- Snoring — a soft nudge when you snore
- Office — keep the open-plan workspace calm
One-tap presets set the right level and alert for each.

TRACK & REVIEW
- See every noisy moment with timestamps and peak levels
- Charts of sound over time
- Export your history to CSV

REMOTE MONITORING
Run Noise Monitor on one device and get alerts on another — watch a nursery, classroom, or room from your phone. Only sound levels and controls are shared — never audio.

PRIVATE BY DESIGN
All sound is analyzed on your device. Audio is never recorded, stored, or uploaded.

Free forever: live meter, threshold alarm, background mode, and core alerts. Premium unlocks all presets, custom & gentle sounds, history & export, and remote monitoring.

Download Noise Monitor and take control of the noise around you.

Ratings and reviews

Don't usually comment but this app is just right. It does exactly what it professes to do. Great job guys. Here's a suggestion, add an option to remote control it. I would leave it running on my tablet while away from the house and respond to notification on my phone to control and monitor for problem at home. This one works fine and should last a hundred years. Thanks.

Does what it says on the tin, however, too much lag. The dial and numbers lag behind the alarm which can be confusing. For example, I set the alarm to 50db but the alarm will be going off when the dial is displaying 35db and the needle will continue to rise to 50 after the alarm has already been triggered. Still useful but makes it harder to track.

Alarm does not stop when noise goes below threshold. You have to get up and manually reset it every time it goes off to get it to stop. Please fix this so I can change my review to 5 stars.

What’s new

Noise Monitor is completely rebuilt!

- Background mode — keeps monitoring with the screen off (our #1 request)
- Auto-stop — alarm stops on its own when the room goes quiet
- New alerts: gentle sound, vibration, screen flash & silent mode
- One-tap presets: Classroom, Baby, Snoring, Office
- History, charts & CSV export
- Remote monitoring — get alerts on a paired phone
- Faster, more accurate meter — no more lag