Level: Sound Level Meter
by Carl Sieber
· Utilities
· Free
On the App Store since June 2026
· Data updated
Level: Sound Level Meter is made and published by Carl Sieber. AppBrain is an independent app data site and isn't affiliated with Carl Sieber. The app name, icon, screenshots and description belong to Carl Sieber and are shown as published on the App Store.
AppBrain's verdict
- Rating on App Store
- 5.00
- 1 ratings
- Last updated
- August 27, 2026
It doesn't have enough ratings yet to judge what users think.
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Releases
Updates seen on the App Store- Version
- 1.4.1
- Launched
- June 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 813.0 KB
- Content rating
- Everyone
Technologies used by Level: Sound Level Meter
About the app and developer
About Level: Sound Level Meter
Level: Sound Level Meter is an utilities app developed by Carl Sieber.
User Ratings
Level: Sound Level Meter is rated 5.00 out of 5 stars. The rating is based on one rating ratings.
App Information
Level: Sound Level Meter is freely available from the App Store. The app size is 813.00 kB. The latest version available is 1.4.1. The last update was on August 27, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since June 2026.
Developer information for Carl Sieber
Address:
Store listing
By Carl Sieber, from the App Store
Screenshots by Carl Sieber, from the the App Store listing
Description by Carl Sieber Written by the developer, not by AppBrain. Click to read.
Level is a fast, honest sound-level meter for iPhone. A big live decibel reading, plus Leq, Min, L90, and Peak alongside it — toggle on only what you need. A built-in reference generator and calibrated-mic support are there for speaker work or true SPL. One clean instrument, not a busy suite.
FEATURES
Big decibel reading — A/C/Z weighting, Fast (125 ms) or Slow (1 s) response
Four toggleable stats in a 2×2 grid: Leq (energy-average), Min (quietest moment), L90 (background level — exceeded 90% of the time), Peak (true instantaneous peak). Always computed; show only what you need
Peak-hold "Max" — a marker holds the loudest moment; tap to reset
Reference signals: pink noise, white noise, ten octave tones (31.5 Hz–16 kHz), level-matched. 1 kHz tone pairs with a 94 dB calibrator
Play any output — iPhone speaker, AirPlay, Bluetooth, or USB — while the meter keeps reading
Calibrated-mic support: Dayton iMM-6C, miniDSP UMIK-1/UMIK-2/EARS, Behringer ECM8000, REW. Frequency correction plus a true-SPL anchor from the file's 1 kHz sensitivity
Manual calibration offset
Share card — current reading, your enabled stats, and the level bar
Full VoiceOver support
No account, no analytics, no third-party SDKs, no in-app purchases, no network connections
HOW IT WORKS
Open Level, allow the microphone, and read the room. Turn on Leq, Min, L90, and/or Peak in Settings → Readings to see them beside the live number in a 2×2 grid. Tap the meter to reset Max and every stat.
For speaker work, tap play to send a reference signal to any output — pink noise for level-setting, white noise for tweeters, an octave tone for room modes, or the 1 kHz tone against a 94 dB calibrator. Long-press play (or use Settings) to switch.
With the built-in mic, readings are approximate but honest and well-behaved. A calibrated USB mic and its cal file give true SPL. Either way, Level is a measurement tool, not a certified Type 1/2 instrument.
GREAT FOR
Checking if a room, party, nursery, or workspace is too loud
Home theater/hi-fi — matching channels, setting levels, dialing in a subwoofer
Car audio — matching and balancing components
Live-sound hobbyists and DIY speaker builders
Anyone who wants an honest number, without a pro measurement suite
PRIVACY
Audio is measured live only — never recorded, written to disk, or transmitted. No account, no analytics, no in-app purchases, no network connection at all.
QUICK START
Open Level, allow the microphone
Read the big number (A-weighted by default)
Settings → Readings: turn on Leq/Min/L90/Peak to add them to the grid
Tap the meter to reset Max and every stat
For speaker work: tap play to send a reference to any output; long-press to switch signals
IMPORTANT
Level is a general-purpose meter, not a certified Type 1/Type 2 instrument. Built-in mic readings are approximate; a calibrated USB mic with a cal file gives true SPL.
FEATURES
Big decibel reading — A/C/Z weighting, Fast (125 ms) or Slow (1 s) response
Four toggleable stats in a 2×2 grid: Leq (energy-average), Min (quietest moment), L90 (background level — exceeded 90% of the time), Peak (true instantaneous peak). Always computed; show only what you need
Peak-hold "Max" — a marker holds the loudest moment; tap to reset
Reference signals: pink noise, white noise, ten octave tones (31.5 Hz–16 kHz), level-matched. 1 kHz tone pairs with a 94 dB calibrator
Play any output — iPhone speaker, AirPlay, Bluetooth, or USB — while the meter keeps reading
Calibrated-mic support: Dayton iMM-6C, miniDSP UMIK-1/UMIK-2/EARS, Behringer ECM8000, REW. Frequency correction plus a true-SPL anchor from the file's 1 kHz sensitivity
Manual calibration offset
Share card — current reading, your enabled stats, and the level bar
Full VoiceOver support
No account, no analytics, no third-party SDKs, no in-app purchases, no network connections
HOW IT WORKS
Open Level, allow the microphone, and read the room. Turn on Leq, Min, L90, and/or Peak in Settings → Readings to see them beside the live number in a 2×2 grid. Tap the meter to reset Max and every stat.
For speaker work, tap play to send a reference signal to any output — pink noise for level-setting, white noise for tweeters, an octave tone for room modes, or the 1 kHz tone against a 94 dB calibrator. Long-press play (or use Settings) to switch.
With the built-in mic, readings are approximate but honest and well-behaved. A calibrated USB mic and its cal file give true SPL. Either way, Level is a measurement tool, not a certified Type 1/2 instrument.
GREAT FOR
Checking if a room, party, nursery, or workspace is too loud
Home theater/hi-fi — matching channels, setting levels, dialing in a subwoofer
Car audio — matching and balancing components
Live-sound hobbyists and DIY speaker builders
Anyone who wants an honest number, without a pro measurement suite
PRIVACY
Audio is measured live only — never recorded, written to disk, or transmitted. No account, no analytics, no in-app purchases, no network connection at all.
QUICK START
Open Level, allow the microphone
Read the big number (A-weighted by default)
Settings → Readings: turn on Leq/Min/L90/Peak to add them to the grid
Tap the meter to reset Max and every stat
For speaker work: tap play to send a reference to any output; long-press to switch signals
IMPORTANT
Level is a general-purpose meter, not a certified Type 1/Type 2 instrument. Built-in mic readings are approximate; a calibrated USB mic with a cal file gives true SPL.