QuietLight: Classroom Noise

QuietLight turns your iPad or iPhone into a classroom noise light. The whole class sees one big number and a green / yellow / red color, earns stars for quiet minutes, and hears a gentle chime when it gets too loud. Nothing is recorded – the sound is turned into a number on the device and thrown away. MADE FOR TEACHERS • One tap to start a lesson – no set-up, no account • Measure the room's baseline in 5 seconds; the yellow and red lines set themselves • Four levels: Silent work, Whisper, Group talk, Free time • Stars for every 2 quiet minutes; a class goal the whole class can see • Countdown timer with a soft finish sound • Chime on red only, at most once every 30 seconds – also through a Bluetooth speaker • Works next to your slides in Split View; keeps stars and timer when a call interrupts • Available in 39 languages FOR THE CLASS • Big number, readable from the back row • Themes for primary and secondary classes: Simple, Friendly, Garden, Space Rocket, Dark Minimal, Gradient Light • Scenes grow with the stars, never with the noise – a loud minute pauses the garden, it never shrinks QUIETLIGHT PRO (7-day free trial, then yearly – or buy once) • Several classes, each with its own settings and baseline • Full history and weekly trends per class • PDF report for a week or a single lesson – print it or send it to parents • Teacher's private mode: no number on the screen; your phone buzzes in your pocket (and your Apple Watch too) when it gets loud • All themes, with new ones every term PRIVACY • The microphone is used only to calculate a volume number on this device • No sound recording or audio upload, no account, no ads • Lesson statistics stay on the device; delete them any time in Settings • Optional usage and technical statistics go to Firebase only with your consent; turn them off in Settings → Privacy. No audio, sound levels, or class names are sent • RevenueCat processes purchase information to unlock Pro and restore purchases • iOS shows the microphone indicator while a lesson runs – that's normal The yearly subscription renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel it in your Apple ID settings. Privacy policy: https://www.decibelmeter.org/quietlight/privacy.html Terms of use: https://www.decibelmeter.org/quietlight/terms.html