Best Sound Noise Decibel Meter Apps

233+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated May 2026

Looking for free sound noise decibel meter apps? 19 of our 233+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Sound Noise Decibel Meter Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (162K)NoYesSep 2026
2Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7★ (54K)NoYesSep 2026
3Decibel : dB sound level meterDecibel : dB sound level meterFree4.6★ (36K)NoYesSep 2026
4Decibel X PRO: dBA Noise MeterDecibel X PRO: dBA Noise Meter$69.994.7★ (6.9K)NoNoSep 2026
5Decibel Meter UltraDecibel Meter UltraFree4.6★ (2.5K)NoYesSep 2026
6Sound noise decibel meterSound noise decibel meterFree4.8★ (6)YesYesJul 2026
7Sound Meter (Decibel)Sound Meter (Decibel)Free4.5★ (3.1K)YesNoSep 2026
8NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7★ (17K)NoNoSep 2026

Top Picks for Sound Noise 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😐(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
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 : dB sound level meter#3

Decibel : dB sound level meter by Vlad Polyanskiy

Audio noise Spectrum Analyzer
Worth Considering
🔧 Utilities
4.6😐(36K ratings)
FreeIn-App Purchases
Decibel : dB sound level meter screenshot 1
Decibel : dB sound level meter screenshot 2
Decibel : dB sound level meter screenshot 3
Decibel : dB sound level meter screenshot 4
Decibel : dB sound level meter screenshot 5
Decibel : dB sound level meter screenshot 6

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.

What We Love

  • 👍 Useful for monitoring noise levels
  • 🔍 Accurate for a phone app
  • 🔧 Good for calibrating audio equipment
  • 💡 Helpful for hearing protection
  • 📊 Provides detailed measurements

Room to Improve

  • 💰 Aggressive upselling tactics
  • 🔒 Privacy concerns around data collection
  • 🕹️ Confusing free vs paid options
  • 🔁 Recurring subscription issues
  • 🔢 Inconsistent/inaccurate readings

More Sound Noise Decibel Meter apps to explore

FAQ about Sound Noise Decibel Meter

What are the best sound noise decibel meter apps for iPhone?
Decibel X:dB Sound Level Meter tops our sound noise decibel meter apps ranking as of May 2026, with a 4.6-star average from 162K App Store ratings, and it's free to download.
Yes — 19 of the top sound noise 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 May 2026.
We track 233+ sound noise decibel meter apps on the iOS App Store as of May 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.