Best Decibel Meter Free Apps

249+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated October 2026

With an average user rating of 4.5★, the decibel meter free category is one of the App Store's strongest. Browse all 249+ apps we track, sorted so the most loved ones surface first.

Compare top Decibel Meter Free Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7★ (56K)NoYesNov 2026
2NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7★ (17K)NoNoNov 2026
3Noise Meter - Sound & DecibelNoise Meter - Sound & DecibelFree2.3★ (3)YesNoOct 2026
4Sound Meter (Decibel)Sound Meter (Decibel)Free4.5★ (3.3K)YesNoNov 2026
5Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (164K)NoYesNov 2026
6Decibel : dB sound level meterDecibel : dB sound level meterFree4.6★ (36K)NoYesNov 2026
7dB Meter Sound Level MeterdB Meter Sound Level MeterFree4.7★ (428)YesNoNov 2026
8Decibel Metre (Sound Meter)Decibel Metre (Sound Meter)Free4.5★ (578)YesNoNov 2026

Top Picks for Decibel Meter Free

Decibel Meter Sound Detector#1
4.7😊(56K 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
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
Noise Meter - Sound & Decibel#3

Noise Meter - Sound & Decibel by MINGUK JANG

Decibel sound level meter
Worth Considering
🔧 Utilities
2.3(3 ratings)
FreeAds
Noise Meter - Sound & Decibel screenshot 1
Noise Meter - Sound & Decibel screenshot 2
Noise Meter - Sound & Decibel screenshot 3
Noise Meter - Sound & Decibel screenshot 4

This app transforms your iPhone into a real-time sound level meter, measuring ambient noise in decibels (dB). It features a live gauge, time-based graph, and tracking of minimum, average, and maximum levels. Ideal for quickly assessing noise levels in various environments.

More Decibel Meter Free apps to explore

FAQ about Decibel Meter Free

What are the best decibel meter free apps for iPhone?
Decibel Meter Sound Detector tops our decibel meter free apps ranking as of October 2026, with a 4.7-star average from 56K App Store ratings, and it's free to download.
Decibel Meter Sound Detector has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ decibel meter free apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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