Best Decibel Meter Apps

250+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated August 2026

With an average user rating of 4.6★, the decibel meter category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Decibel Meter Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (161K)NoYesAug 2026
2Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7★ (54K)NoYesAug 2026
3NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7★ (17K)NoNoAug 2026
4Sound Meter (Decibel)Sound Meter (Decibel)Free4.5★ (3.1K)YesNoAug 2026
5Decibel : dB sound level meterDecibel : dB sound level meterFree4.6★ (36K)NoYesAug 2026
6Decibel Meter: Sound dBDecibel Meter: Sound dBFree4.3★ (303)YesYesAug 2026
7Decibel Meter UltraDecibel Meter UltraFree4.6★ (2.5K)NoYesAug 2026
8Decibel Metre (Sound Meter)Decibel Metre (Sound Meter)Free4.5★ (577)YesNoAug 2026

Top Picks for Decibel Meter

Decibel X:dB Sound Level Meter#1

Decibel X:dB Sound Level Meter by SkyPaw Co., Limited

Frequency Spectrum Analyzer
Editor's Choice
🔧 Utilities
4.6😐(161K ratings)
FreeIn-App Purchases
Decibel X:dB Sound Level Meter screenshot 1
Decibel X:dB Sound Level Meter screenshot 2
Decibel X:dB Sound Level Meter screenshot 3
Decibel X:dB Sound Level Meter screenshot 4
Decibel X:dB Sound Level Meter screenshot 5
Decibel X:dB Sound Level Meter screenshot 6

This app transforms your device into a professional sound level meter, precisely measuring ambient noise pressure. It offers advanced features like frequency analysis, historical data management, and dosimeter functions, making it useful for various applications and entertainment.

What We Love

  • ⭐ Excellent app
  • 👍 Easy to use and understand
  • 🔍 Useful for various applications
  • 🎓 Helpful for hearing protection

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Misleading free trial
  • 📢 Intrusive ads
Decibel Meter Sound Detector#2

Decibel Meter Sound Detector by Ashraf Thoppukadavil

Track noise around you.
Strong Contender
📊 Productivity
4.7😊(54K ratings)
FreeIn-App Purchases
Decibel Meter Sound Detector screenshot 1
Decibel Meter Sound Detector screenshot 2
Decibel Meter Sound Detector screenshot 3
Decibel Meter Sound Detector screenshot 4

Monitor your surroundings with this decibel meter app. It measures sound levels in real-time, providing clear visual analysis and advanced filtering options. Easily share your readings for documentation or further analysis.

What We Love

  • 👍 No bloatware
  • 👍 Quite useful
  • 👍 Excellent and useful app
  • 👍 Easy to use

Room to Improve

  • 🐛 Ads block settings
  • 🐛 Inaccurate readings
  • 🐛 Not sensitive at all
NIOSH Sound Level Meter#3

NIOSH Sound Level Meter by EA LAB

Worth Considering
🔧 Utilities
4.7😊(17K ratings)
Free
NIOSH Sound Level Meter screenshot 1
NIOSH Sound Level Meter screenshot 2
NIOSH Sound Level Meter screenshot 3
NIOSH Sound Level Meter screenshot 4
NIOSH Sound Level Meter screenshot 5

This free app measures sound levels and noise exposure using your smartphone. Developed by acoustics experts, it provides professional-grade metrics and guidance on hearing protection and noise prevention.

What We Love

  • 🚀 Free and ad-free
  • 👍 Simple and intuitive interface
  • ⚖️ Accurate and reliable measurements
  • 💡 Useful for monitoring noise levels in various environments

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔌 Issues with external microphone support
  • 🔋 Can drain battery when running for extended periods

More Decibel Meter apps to explore

4
Sound Meter (Decibel)
Sound Meter (Decibel)
Sound Meter (Decibel)
Measure the noise level
Free

This application measures and displays environmental noise levels in decibels. It offers various visual representations of the data, including gauges, graphs, and numerical readouts. Users can also save their measurement history.

Measures decibel valuesDisplays noise referenceShows min/avg/max dB
🔧 Utilities
(3.1K)
ad-supported
5
Decibel : dB sound level meter
Decibel : dB sound level meter
Decibel : dB sound level meter
Audio noise Spectrum Analyzer
Free

Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.

Real-time decibel (dB) sound level monitoringIntegrated Spectrum Analyzer (FFT, spectrogram)Sleep tracking with sound recognition
🔧 Utilities
(36K)
freemium
6
Decibel Meter: Sound dB
Decibel Meter: Sound dB
Decibel Meter: Sound dB
Noise Level Tracker & SPL App
Free

Transform your device into a professional decibel meter to measure and track sound levels in real-time. Save measurements, view history charts, and set custom alerts for excessive noise. Useful for documenting sound exposure or identifying noise sources.

Real-time decibel meterSave and export noise measurementsNoise history charts
🔧 Utilities
(303)
free with in-app purchases
7
Decibel Meter Ultra
Decibel Meter Ultra
Decibel Meter Ultra
Measure Sound and Noise Levels
Free

Measure, record, and analyze sound levels in your environment. This app offers precision metering, noise elimination tools, hearing protection features, and home audio calibration. It provides detailed reports and can be used with device microphones or external ones.

Precision sound level meteringNoise logging and reportingHearing protection dosimeter
🔧 Utilities
(2.5K)
free with in-app purchases
8
Decibel Metre (Sound Meter)
Decibel Metre (Sound Meter)
Decibel Metre (Sound Meter)
Measure the environment noise
Free

This application functions as a smart sound level meter, utilizing your device's microphone to measure ambient noise in decibels (dBA). It provides real-time readings on a digital screen and displays historical data through a graph. The app also shows reference noise levels and tracks minimum, average, and maximum decibel values.

Measures sound level in decibels (dBA)Uses built-in microphoneDisplays readings on digital screen
🔧 Utilities
(577)
ad-supported
9
Decibel Meter: Sound dB Meter
Decibel Meter: Sound dB Meter
Decibel Meter: Sound dB Meter
Noise and Voice Level Meter
Free

Measure sound and noise levels accurately with real-time dB volume readings. This tool uses your device's microphone to display sound pressure levels and offers calibration for improved precision. Monitor environments to ensure they meet recommended noise limits.

Real-time sound level readingsA, C, and Z weighting supportLive sound pressure level graphs
🔧 Utilities
(4)
free
10
Sound & Decibel Meter - dBScan
Sound & Decibel Meter - dBScan
Sound & Decibel Meter - dBScan
Noise Level Meter & Measure
Free

This application transforms your device into a real-time sound level meter. It accurately measures and analyzes ambient noise in decibels and frequency, helping you monitor your surroundings and maintain safe sound levels.

Real-time noise level measurementDecibel (dB) monitoringFrequency analysis
🔧 Utilities
(1)
free with in-app purchases
11
Decibel Meter Master
Decibel Meter Master
Decibel Meter Master
Tool for measuring sound level
Free

This tool transforms your iPhone into a professional sound level meter. It accurately measures ambient noise levels, providing real-time decibel readings directly on your device.

Measures sound levelActs as a decibel meterUses iPhone as a meter
🔧 Utilities
(2.9K)
free
12
Decibel - sound level meter
Decibel - sound level meter
Decibel - sound level meter
Spectrum frequency analyzer
Free

Measure and analyze the sound pressure around you with this app. It provides spectrum frequency analysis and allows you to compare your recordings to a reference chart. Save your measurement history for future reference.

Measure sound pressureSpectrum frequency analysisReference chart comparison
🔧 Utilities
(4.7K)
subscription
13
Decibel Meter dB (Sound Meter)
Decibel Meter dB (Sound Meter)
Decibel Meter dB (Sound Meter)
Noise Level Analyzer + Measure
Free

Measure sound volume in real-time with this app. It provides precise decibel readings, a visual timeline of sound fluctuations, and customizable calibration for accurate results. Ideal for monitoring noise levels in various environments.

Accurate sound measurements in decibels (dB)Real-time volume displayVolume timeline for trend analysis
🔧 Utilities
(1.3K)
free with in-app purchases
14
Decibel Meter - Sound Level.
Decibel Meter - Sound Level.
Decibel Meter - Sound Level.
Measure Noise & Frequency
Free
🔧 Utilities
(0)
15
Decibel Meter°
Decibel Meter°
Decibel Meter°
dB Checker & Sound Analyzer
Free
🔧 Utilities
(0)
16
Sound Decibel Meter+
Sound Decibel Meter+
Sound Decibel Meter+
Noise Level & Loudness
Free

Instantly measure sound levels and understand noise pollution with this smart decibel meter. It provides real-time dB readings, safety insights, and context for everyday sounds to help protect your hearing.

Real-time dB readingsLive waveform visualizationNoise interpretation and safety insights
🔧 Utilities
(2)
freemium
17
Decibel Meter - dB Noise Meter
Decibel Meter - dB Noise Meter
Decibel Meter - dB Noise Meter
Sound Level Meter & Test, Spl
Free

Measure ambient sound levels accurately in real-time. Understand noise exposure in various environments like concerts or workplaces. This tool helps you monitor and gain insights into the decibel levels around you.

Real-time decibel readingsAccurate sound level measurementEnvironmental noise monitoring
🔧 Utilities
(2)
free with in-app purchases
18
dbDOSE Decibel Sound Meter
dbDOSE Decibel Sound Meter
dbDOSE Decibel Sound Meter
Decibel Meter
$2.99

Measure ambient noise levels, frequency components, and daily noise exposure in real-time. This tool helps monitor your environment and understand potential hearing risks with detailed analysis and session recording.

Real-time decibel (dBA) meterReal-time frequency (Hz) FFT analysisDosimeter noise level meter (OSHA)
🔧 Utilities
(4)
paid
19
Loudly: Decibel Meter dB
Loudly: Decibel Meter dB
Loudly: Decibel Meter dB
Sound Level Meter & Noise dBA
Free

Transform your iPhone into a precise sound level meter. It measures noise in real-time with a clear visual display and offers professional features for various uses, from monitoring baby rooms to protecting your hearing. All processing is done on-device with no data collection.

Real-time decibel measurementsIEC 61672 compliant audio engineA-weighting and C-weighting filters
🔧 Utilities
(1)
free with in-app purchases
20
Decibel Meter dB
Decibel Meter dB
Decibel Meter dB
Sound level meter
$3.99

This app provides real-time decibel monitoring with a dynamic visual display and color-coded alerts for different noise thresholds. It helps users track sound levels, understand potential risks, and maintain healthier audio environments. Ideal for various settings, it offers a simple and effective way to stay aware of ambient noise.

Real-time decibel monitoringAnimated visual ear displayColor-coded noise alerts
🌟 Lifestyle
(0)
paid

FAQ about Decibel Meter

What are the best decibel meter apps for iPhone?
Decibel X:dB Sound Level Meter tops our decibel meter apps ranking as of August 2026, with a 4.6-star average from 161K App Store ratings, and it's free to download.
Yes — 18 of the top decibel meter apps we rank are free to download, including Decibel X:dB Sound Level Meter and Decibel Meter Sound Detector.
Decibel X:dB Sound Level Meter has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ decibel meter apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Decibel X turns your iOS device into a professional sound level meter. It precisely measures the sound pressure level (SPL) around you and offers advanced features like frequency spectrum analysis and historical data management.
Key features include trusted accuracy with pre-calibrated measurements, Apple Watch support, Health App integration, various frequency weighting filters (A, C, Z, ITU-R 468), powerful history data management with export options, dosimeter functions, and real-time FFT and BAR graphs for frequency analysis.

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