Observed arrival · 2026-11-12
Classroom Noise Meter: Seth’s
A microphone-powered classroom noise meter turns quiet time into a shared game, with Seth characters appearing as the class listens.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teachers making quiet classroom time more engaging
- Worth noticing
- The page says audio is analyzed live in-browser; Seth Index progress stays in local storage on the device.
Field notes
After a five-second calibration to ordinary room noise, a teacher can adjust the noise limit, sensitivity, grace period, and spawn-sound volume. Quiet time earns one coin every three seconds, while progress toward the next Seth and collected Seths are stored in the browser’s local storage. Its privacy text says microphone audio is analyzed live in the browser and is not recorded, saved, or sent; beginning the meter requires microphone permission.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue