# Sound Level Meter: Decibel dB

> Noise & SPL Meter, Offline

Canonical page: [https://chrome-stats.com/d/id6785072750](https://chrome-stats.com/d/id6785072750)

## Overview

- **ID:** `id6785072750`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Hritik Arthur
- **Category:** Utilities
- **Version:** 1.0.1
- **Last updated:** 2026-07-14
- **First published:** 2026-07-03
- **Size:** 8.27 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sound-level-meter-decibel-db/id6785072750)
- **Website:** [https://65acd002865d583398fce6a3--mellow-souffle-81cdad.netlify.app/app-ads.txt](https://65acd002865d583398fce6a3--mellow-souffle-81cdad.netlify.app/app-ads.txt)
- **Privacy policy:** [https://sono-sound-meter.web.app/privacy-policy-ios.html](https://sono-sound-meter.web.app/privacy-policy-ios.html)

## Description

Sono is a clean, easy-to-read sound level meter that turns your phone into a real-time decibel meter. Measure how loud anything is, right now, in dB(A). 
No sign-up, no login, fully offline.

Checking a noisy restaurant, a concert, your AC or PC fans, road and traffic noise, a snoring partner, a baby's room, a workplace or machine shop, or a neighbour's music? Sono shows the sound pressure level (SPL) instantly with a clear live reading, an animated dial, and a scrolling graph.

Why Sono 
• Fully offline. No account, no login. Your audio is never recorded or stored and never leaves your device. 
• Live dB(A), min / average / max, real-time graph, history and calibration, included. 
• Honest readings. A per-device calibration offset lets you trim the reading to match a reference.

Features 
• Live decibel meter with a large, easy-to-read dB number 
• A, C and Z frequency weighting: dB(A), dB(C), dB(Z) 
• Min, average and max for every session 
• Real-time scrolling graph, from 30 seconds up to 30 minutes 
• Peak hold marker on the dial 
• Session timer with pause and resume 
• Calibration offset to match a reference level 
• Three gauge styles: circular, semicircular, and analog needle 
• Reference guide: how loud common sounds are, from a whisper to a jet 
• Save measurements with labels and notes, then browse your history 
• Add timestamped marks while measuring 
• Dark mode that remembers your choice, plus optional haptics 
• Lightweight and fast, opens straight to a live reading

How Loud Is It? Quiet library ~30–40 dB · normal conversation ~60 dB · busy traffic ~70–80 dB · lawn mower ~90 dB · nightclub ~100 dB · rock concert ~110 dB. Sono labels the live reading against everyday sources so the numbers actually mean something.

Great For 
• Checking whether a venue, restaurant or workplace is too loud 
• Settling neighbour noise disputes 
• Calibrating speakers, home theatre and audio gear 
• Measuring appliances, fans, engines and machinery 
• Anyone curious how loud their world really is

A Note on Accuracy: Phone microphones are tuned for voice and can clip at very high volumes, so readings are approximate. Sono is a reference tool and is not a replacement for a certified sound level meter (SLM). Use the calibration offset to align Sono with a known reference for more reliable results.

Sono is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Not a certified sound level meter, for reference only.

Sono: the simple, offline decibel meter.

## Rankings

- #2,105,564 — Overall

## Similar extensions and apps

- [SoniMeter: Sound Level Meter](https://chrome-stats.com/d/id6772677494)
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- [Sound Noise Meter+ dB SPL](https://chrome-stats.com/d/id1593197145) — 3.00 / 5
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- [Sound Level Meter: Decibel](https://chrome-stats.com/d/id6745488403)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6785072750)