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Best Free Spl Meter Apps

235+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our free spl meter list covers 235+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Free Spl Meter

NIOSH Sound Level Meter#1

NIOSH Sound Level Meter by EA LAB d.o.o.

Editor's Choice
🔧 Utilities
4.7😊(16K 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
Decibel X:dB Sound Level Meter#2

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

Frequency Spectrum Analyzer
Strong Contender
🔧 Utilities
4.7😐(156K 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#3

Decibel Meter Sound Detector by Ashraf Thoppukadavil

Track noise around you.
Worth Considering
📊 Productivity
4.7😊(48K 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

More Free Spl Meter apps to explore

4
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
5
Decibel Level Meter - Measure Sound Volume Free
Decibel Level Meter - Measure Sound Volume Free
Decibel Level Meter - Measure Sound Volume Free
by 齐 陈
Free

This application allows users to quickly and simply measure the decibel level of their surroundings. It features a clean user interface with a large-text display of the one-minute average sound volume.

Easy to useMeasures decibel levelsOne-minute average display
🔧 Utilities
(44)
free
6
Decibel Meter Ultra
Decibel Meter Ultra
Decibel Meter Ultra
Noise Level Frequency Analyzer
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
(2.3K)
free with in-app purchases
7
SPL Meter : dB Noise Tool
SPL Meter : dB Noise Tool
SPL Meter : dB Noise Tool
Measure Decibels ,spl meter
Free

Transform your device into a professional sound level meter to measure decibels in real-time. Monitor noise levels, visualize sound frequencies, and track your exposure to ensure safe hearing limits.

Accurate noise level detectionLive audio monitoringProfessional calibration
🔧 Utilities
(14)
freemium
8
SPL Meter
SPL Meter
SPL Meter
Sound Level Meter
$0.99

This application functions as a professional-grade sound level meter, measuring decibels (dB) with advanced DSP algorithms. It offers adjustable filters, decay rates, and ranges, and can be calibrated for accuracy. It supports both internal and external microphones for versatile sound measurement.

A and C weighting filtersANSI Fast or Slow decay40dB to 120dB ranges
🎵 Music
(25)
paid
9
SPL Meter - dBTracker
SPL Meter - dBTracker
SPL Meter - dBTracker
NIOSH Noise Monitor X
Free

This tool measures ambient noise levels in real-time, providing decibel readings to help you understand noise intensity and protect your hearing. It features an intuitive gauge, explanations of noise levels, and recording capabilities to track variations across locations and times.

Real-time decibel measurementIntuitive gauge displayNoise level explanations
🔧 Utilities
(9)
free with in-app purchases
10
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
(1.2K)
free with in-app purchases
11
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
(2.6K)
ad-supported
12
Sound meter : SPL & dB meter
Sound meter : SPL & dB meter
Sound meter : SPL & dB meter
Decibel Meter: Sound Meter App
Free
🔧 Utilities
(0)
13
Noise Guru: Decibel Meter
Noise Guru: Decibel Meter
Noise Guru: Decibel Meter
Sound level meter, audio tools
Free

Measure sound levels with precision to understand your environment and protect your hearing. Identify loud noises, monitor noise pollution, and find quiet spaces for recording. Features include a decibel dosimeter, background noise measurement, and geo-tagged recordings.

Precise sound level metering (SPL)DB Dosimeter for noise exposure trackingBackground noise measurement
🔧 Utilities
(299)
free
14
Sound Meter (SPL meter)
Sound Meter (SPL meter)
Sound Meter (SPL meter)
Noise & decibel meter, SPL
$0.99

This utility app uses your device's microphone to measure ambient noise levels in decibels. It displays readings with graphical representations and provides historical data like minimum, average, and maximum values. Calibration options are available for different devices.

Measures noise in decibels (dB)Displays decibel readings on a gaugeShows current, min, avg, and max dB values
🔧 Utilities
(0)
ad-supported
15
Toolbox - Smart Meter Tools
Toolbox - Smart Meter Tools
Toolbox - Smart Meter Tools
Best Measuring Tool Box App
Free

Transform your device into a versatile toolkit with a comprehensive suite of measuring instruments. This app offers a metronome, stopwatch, timer, ruler, level, and various sensors to assist with a wide range of tasks.

MetronomeStopwatchTimer
🔧 Utilities
(14K)
free with in-app purchases
16
Decibel X PRO: dBA Noise Meter
Decibel X PRO: dBA Noise Meter
Decibel X PRO: dBA Noise Meter
Frequency Spectrum Analyzer
$69.99

This application transforms your device into a professional sound level meter, offering precise dBA and dBC measurements. It features advanced analysis tools like frequency spectrum analysis and data export, making it ideal for audio professionals and anyone interested in sound environments.

Professional sound level meterdBA and dBC measurementsFrequency spectrum analysis (FFT, BAR graphs)
🔧 Utilities
(6.9K)
paid
17
Audiobel: Professional SPL
Audiobel: Professional SPL
Audiobel: Professional SPL
Sound meter noise dosimeter
$1.99

Measure sound levels precisely using your device's microphone, displayed in decibels. Track average, max, and min levels with real-time graphics and calibration options for accuracy. Record, save, and export audio measurements.

Measure sound levels in decibelsDisplay average, max, and min levelsReal-time graphic display
🔧 Utilities
(235)
free
18
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
19
Sound Meter HQ
Sound Meter HQ
Sound Meter HQ
Measure noise and sound level
Free

This application measures noise and sound levels using your device's microphone. It displays results in decibels on a logarithmic graph and allows for calibration to ensure accuracy. You can record minimum, average, and maximum sound levels.

Measure sound levelVibration meterNoise detector
🔧 Utilities
(327)
free with in-app purchases
20
dB Meter: Decibel, SPL, Noise
dB Meter: Decibel, SPL, Noise
dB Meter: Decibel, SPL, Noise
Spectrum, Sound Level & RTA
Free

Instantly measure sound levels with a real-time analog gauge. Analyze noise with average, peak, and time-averaged readings. Features include low-frequency indication and on-device calibration for accuracy. Works offline without internet.

Real-time dB sound level measurementLive min/average/peak readoutLAeq and LCeq time-averaged readings
🔧 Utilities
(1)
free with in-app purchases