How loud is it, really?
A sound level meter that does not stop at the number. Every reading comes with what it actually means — a library, a café, a building site — and how long you can safely stay there.
A number is useless on its own.
68 dB means nothing until you know it is a conversation, and that 94 dB is where your hearing starts paying for it.
Measure, understand, keep a record.
Live spectrum
Twenty-four frequency bands fan out around the dial, so you can see whether the noise is a low rumble or a high whine — not just how loud it is.
Exposure time
Above 80 dB the app tells you how long you can stay before the level becomes a risk, halving the time for every extra 3 dB.
Last minute charted
A rolling graph of the past minute, plus the minimum, average and peak of the whole session. Reset it in one tap.
Your own threshold
Set the level at which the reading turns red. The default is 85 dB, the point above which prolonged exposure is commonly considered risky.
The microphone listens. Nothing is kept.
Measuring sound needs the microphone. That is the only thing it is used for.
- No recording. Audio is turned into a level reading and discarded immediately. No file is ever written.
- No network. The app makes no requests at all — there is no server to send anything to.
- No SDKs. No analytics, no advertising, no crash reporter, no third-party code.
- Nothing to sign up for. No account, no email address, no upsell.