PetSilence

PetSilence is a free classroom noise monitor and noise meter that runs in any web browser. It is made for the classroom projector or interactive display, so the whole class can see how loud the room is without the teacher having to say "shh" again and again.

How it works: the teacher opens the page, allows the microphone and runs a short calibration for the room. A cartoon class pet then reacts to the volume. It sleeps while the room is quiet, looks up as voices rise, and covers its ears when the class gets too loud. Teachers can choose a corgi, kitten, bunny or panda in a cartoon, hand-drawn or felt style.

Quiet Farm: the class pet lives on a farm that grows over the school year. The class votes on a crop, quiet minutes make it grow, and every completed focus goal is a harvest. Harvests clear wild land, uncover farm treasures and bring animal visitors, and a quiet calendar shows how the class did each day. Noise only pauses the growing; nothing is ever taken away.

Other features: a bouncing balls mode, focus timers from 3 to 15 minutes, Silent and Whisper zones, full screen mode, an optional too-loud chime, and separate farms for each class a teacher works with.

Privacy: there is no sign-up for teachers or students and nothing to install. Classroom audio is analysed in the browser and is never recorded or uploaded. PetSilence works on Chromebooks, iPads, Windows and Mac computers, and it is a free alternative to Bouncy Balls for K-8 classrooms.