Level
How it works
Open
No setup, no account, no calibration wizard. Open the app and the meter is already running.
Read
One big number, updated live. Max holds your loudest moment; Leq averages the whole session beside it.
Set
Play the built-in reference — pink noise, white noise, or an octave tone — and set every speaker to the same number.
The whole meter, at a glance.
A big live readout, the meter beneath it, your peak held automatically, and the session average right beside the number. Nothing blinking, nothing gamified — an instrument you can read across the room.
What it measures
Live sound level
A-, C-, or Z-weighted, Fast or Slow response — the standards real meters use, not a made-up scale.
The average pros report
Leq is the energy average of everything since you started — the number regulations and acousticians actually quote. It sits beside the live reading and resets with Max.
Max that holds
Your loudest moment stays on screen and marked on the meter until you reset it.
Reference signals
Pink noise, white noise, and octave tones from 31.5 Hz to 16 kHz — all level-matched, so the meter doesn't jump when you switch.
Plug in a real mic
Import the cal file from a UMIK-1, UMIK-2, EARS, ECM8000, or iMM-6C — or a REW export — and Level applies the correction. When the file carries a 1 kHz sensitivity, that's true SPL.
Share the moment
Max, Now, Leq, and the level bar on a styled card — proof of how loud it really was, shared anywhere.
The test signal is built in.
Level plays the reference and the meter keeps reading — set your speakers while the tone plays. Pink noise for speaker levels, white noise for checks, octave-band tones for finding what a room does — no second app, no test-tone downloads.
A phone mic is approximate. We say so.
Level doesn't pretend. The built-in mic gives you an honest estimate — plenty to set speaker levels and settle arguments. When you need true SPL, plug in a measurement mic and import its calibration file. Level reads through it, corrected.
Privacy
Nothing leaves your phone.
The microphone is used to measure level — audio is processed in real time and never recorded, stored, or transmitted. No account, no analytics, no network connection required.
This page serves as the privacy policy for the Level iPhone app.
Know how loud. Right now.
Free — including reference signals and calibration. No in-app purchases, no account.