Best Noise Decibel Meter Apps

250+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated September 2026

Every iPhone needs a few good noise decibel meter apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Noise Decibel Meter Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7★ (17K)NoNoSep 2026
2Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7★ (54K)NoYesSep 2026
3Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (162K)NoYesSep 2026
4Decibel Meter: Sound dBDecibel Meter: Sound dBFree4.3★ (303)YesYesSep 2026
5Decibel Meter - dB Noise LevelDecibel Meter - dB Noise LevelFree4.8★ (50)NoYesSep 2026
6Noise Decibel MeterNoise Decibel MeterFree4.7★ (43)YesNoAug 2026
7Noise Meter - Sound & DecibelNoise Meter - Sound & DecibelFreeYesNoSep 2026
8Noise Decibel Meter - dB MeterNoise Decibel Meter - dB MeterFreeYesYesSep 2026

Top Picks for Noise Decibel Meter

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
  • 🔍 Provides detailed noise data and exposure information

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔌 Issues with external microphone support
  • 🔋 Can drain battery when running for extended periods
  • 📱 Limited iPad optimization
Decibel Meter Sound Detector#2
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
  • 👍 Simple, clear and accurate
  • 👍 Works fine
  • 👍 Precise and accurate
  • 👍 Straightforward interface
  • 👍 Useful for measuring noise levels
  • 👍 Helpful for hearing conservation
  • 👍 Accurate and convenient
  • 👍 Surprisingly accurate
  • 👍 Clean interface
  • 👍 Stunning masterpiece
  • 👍 Needs more than 5 stars

Room to Improve

  • 🐛 Ads block settings
  • 🐛 Inaccurate readings
  • 🐛 Not sensitive at all
  • 🐛 Dangerously inaccurate
  • 🐛 Unable to record continuously
Decibel X:dB Sound Level Meter#3

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

Frequency Spectrum Analyzer
Worth Considering
🔧 Utilities
4.6😐(162K 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
  • 🔧 Accurate and reliable

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Misleading free trial
  • 📢 Intrusive ads
  • 🤖 Inaccurate readings compared to professional meters
  • 🤔 Confusing interface

More Noise Decibel Meter apps to explore

FAQ about Noise Decibel Meter

What are the best noise decibel meter apps for iPhone?
NIOSH Sound Level Meter tops our noise decibel meter apps ranking as of September 2026, with a 4.7-star average from 17K App Store ratings, and it's free to download.
Yes — 20 of the top noise decibel meter apps we rank are free to download, including NIOSH Sound Level Meter and Decibel Meter Sound Detector.
NIOSH Sound Level Meter has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ noise decibel meter apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app functions as a professional sound level meter and noise dosimeter, allowing you to measure ambient noise levels and assess noise exposure. It provides key metrics like LAeq, TWA, Max, and Peak levels, as well as noise dose calculations according to NIOSH and OSHA standards.
The app has been tested and validated for accuracy, with a tolerance of ± 2 dBA, according to standards in a reverberant chamber at the NIOSH acoustics lab. When used with an external microphone, it meets Type 2 requirements of the IEC 61672:3 SLM standard.

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