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Decibels: Sound Level dB Meter

Decibels: Sound Level dB Meter

Noise, SPL & Spectrum Analyzer

22 ratings
9 reviews
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

  • Released
  • Updated
  • November 1, 2021
  • September 12, 2026

Features

Developer

Real Vision Ltd
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Decibels: Sound Level dB Meter screenshot #8 for iPhone
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ipad
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🔄6+ apps
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❓8 answered
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About

Measure sound levels in decibels using your device's microphone. View real-time graphs and historical data to detect noise pollution and protect your hearing. Calibrate for accurate readings across various environments.

✓Measures sound in decibels (dB)
✓Displays sound samples on a graph
✓Detects loud and low environmental noise
✓Calibrated for accuracy
✓Shows min/avg/max decibel values
✓Saves data and view history
✓Calibrates decibel for each device
Show original description

What's New in Decibels

2.0

September 12, 2026

Decibels 2.0 is a ground-up rebuild. - A real instrument: A/C/Z weighting, Fast/Slow/Impulse response, Leq, C-weighted peak, SEL and L10/L50/L90 - Per-device calibration, verified against a laboratory-validated reference - Spectrum analyzer, 1/3-octave bands and a spectrogram waterfall - Night mode with a morning quiet-hours report - Threshold alerts and opt-in Evidence Clips - Exposure dosimeter (NIOSH · OSHA · EU) with Apple Health export - Live Activity, widgets, share cards, CSV and PDF export - No ads, no tracking — audio never leaves your phone Existing subscribers keep full access. Earlier saved readings from version 1 aren't carried over.

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Subscriptions & In-App Purchases

dB Meter Full App Access

full app access

$3.991 Month
How to cancel Decibels subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Cobrança indevida

NÃO BAIXEM ESTE APP. Havia uma mensagem de período de teste por 3 dias e cobraram na hora. Quero meu dinheiro de volta.
guiwicguiwic

Como eu cancelo os 3 meses?

Não posso pagar
Noisnois noisNoisnois nois

3 jours d’essai inexistant …

Attention car vous payer l’abonnement d’un mois dès l’installation alors que l’éditeur précise 3 days free ! A vous de voir …
On ne sait pas si la mesure se fait suivant la norme dB(A) dans l’app non plus (à moins de payer plus encore ?)
lpat 78lpat 78

Db

Çok kullanışlı değil ama idare eder.
kecitırekecitıre

Cobrança indevida

Nas primeiras horas já cobram pelo aplicativo.
Jean PalomequeJean Palomeque
See 4 more reviews

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FAQ

What is Decibels used for?

Decibels is used to measure sound levels in decibels (dB) using your iPhone's microphone. It helps you detect environmental noise pollution and understand sound exposure to protect your hearing.

How accurate is Decibels?

Decibels is calibrated to be accurate within a +-2.5 dB range of the actual noise level. The developers have adjusted it using professional sound meters and for many iOS devices.

Can Decibels measure very loud sounds?

Microphones on iOS devices are primarily made for voice recording, which limits the maximum noise they can recognize, often above 100dB. While Decibels aims for accuracy, extremely loud sounds might not be fully captured.

Does Decibels have ads?

No, Decibels does not contain advertisements. It is a free app with optional in-app purchases for full access.

What are the subscription options for Decibels?

Decibels offers 'dB Meter Full App Access' for a monthly subscription of $3.99, providing complete functionality.

What devices does Decibels support?

Decibels is available for iPhone and iPod devices. It is designed to work efficiently on these platforms.

How often is Decibels updated?

The latest version of Decibels is 1.4, and it was last updated on October 16, 2025. Updates typically include improvements and new features.

What is the age rating for Decibels?

Decibels has an age rating of 4+, making it suitable for a wide range of users interested in sound measurement.