About PetSilence

PetSilence is a free classroom noise monitor that turns room volume into a cartoon pet or bouncing balls students can see from their seats. It runs in the browser, needs no account, and never records what anyone says.

Why it exists

Telling a class to be quiet works for a minute. A shared visual cue lets students notice the room getting louder on their own, before the teacher has to step in. PetSilence keeps that cue friendly: the pet sleeps while the room is calm, looks up as voices rise, and asks for softer voices when it gets too loud. Focus goals and stars turn a quiet stretch into something the class earns together.

How the sound measurement works

When you choose Start, the browser asks for microphone permission. PetSilence then reads the overall loudness of the room many times a second, compares it with the thresholds set during calibration, and updates the display. The calculation happens on the classroom computer. Audio is never recorded, stored, transcribed, or uploaded, and the readings are relative sound levels rather than calibrated decibels.

What PetSilence collects

• No classroom audio, ever.
• No teacher or student accounts.
• Privacy-limited page and feature counts through Google Analytics, with advertising storage and personalization turned off, so we can see which features teachers use.
• An email address only if a teacher votes for the next class pet or joins the Classroom Pro list. It is stored in PetSilence's own database, never sold or shared, and deleted on request.
• Optional after-class ratings and comments, stored without an email or IP address.

Read what teachers should check about classroom noise monitor privacy for the questions to ask of any tool, including this one.

Free resources

Alongside the monitor, PetSilence publishes teacher guides on classroom noise routines and a free printable voice level chart.

Support PetSilence

PetSilence is free, ad-free, and built by a small independent team. If it helps your class, you can buy us a coffee or become a monthly sponsor through Stripe. It goes toward hosting and new class pets.

Contact

Questions, feedback, bug reports, and privacy requests go to hello@petsilence.com. Please do not include student information.