Best Noise Decibel Meter Free Apps

250+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated October 2026

With an average user rating of 4.2β˜…, the noise decibel meter free 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 Noise Decibel Meter Free Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel Meter UltraDecibel Meter UltraFree4.6β˜… (2.6K)NoYesNov 2026
2Sound Meter (Decibel)Sound Meter (Decibel)Free4.5β˜… (3.3K)YesNoNov 2026
3Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7β˜… (56K)NoYesNov 2026
4Decibel Meter MasterDecibel Meter MasterFree4.6β˜… (3.2K)NoNoNov 2026
5Decibel Meter dB (Sound Meter)Decibel Meter dB (Sound Meter)Free4.4β˜… (1.3K)YesYesNov 2026
6NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7β˜… (17K)NoNoNov 2026
7Noise Decibel MeterNoise Decibel MeterFree4.6β˜… (46)YesNoOct 2026
8Noise Meter - Sound & DecibelNoise Meter - Sound & DecibelFree2.3β˜… (3)YesNoOct 2026

Top Picks for Noise Decibel Meter Free

Decibel Meter Ultra#1

Decibel Meter Ultra by Ultrafine

Measure Sound and Noise Levels
Editor's Choice
πŸ”§ Utilities
4.6😞(2.6K ratings)
FreeIn-App Purchases
Decibel Meter Ultra screenshot 1
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Decibel Meter Ultra screenshot 6

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.

What We Love

  • 🎨 Aesthetically pleasing design
  • πŸ” Useful noise monitoring features
  • πŸ” Ability to collect noise evidence

Room to Improve

  • πŸ’° Expensive subscription pricing
  • 🚫 Misleading free trial claims
  • 🚫 Difficult to cancel subscription
  • πŸ” Inconsistent noise level readings
Sound Meter (Decibel)#2

Sound Meter (Decibel) by UniCom Technology

Measure the noise level
Strong Contender
πŸ”§ Utilities
4.5😐(3.3K ratings)
FreeAds
Sound Meter (Decibel) screenshot 1
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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.

What We Love

  • πŸš€ Works perfectly
  • πŸ‘ Easy to use and free
  • πŸ‘ Good simple UI
  • πŸ‘ Good basic sound level meter
  • πŸ‘ Very easy and simplified display
  • πŸ‘ Super convenient, very useful
  • πŸ‘ Accurate sound measurement

Room to Improve

  • πŸ› Spelling mistake ('quiet' spelled as 'quite')
  • πŸ› Inaccurate readings compared to other apps
  • πŸ› Requires a subscription for basic recording
  • πŸ› Imprecise metering, not a reliable tool
  • πŸ› Doesn't work in split screen
  • πŸ› Poorly documented statistics
Decibel Meter Sound Detector#3
4.7😊(56K ratings)
FreeIn-App Purchases
Decibel Meter Sound Detector screenshot 1
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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

  • πŸ‘ No bloatware
  • πŸ‘ Quite useful
  • πŸ‘ Excellent and useful app
  • πŸ‘ Easy to use
  • πŸ‘ Simple, clear and accurate
  • πŸ‘ Works fine
  • πŸ‘ Precise and accurate
  • πŸ‘ Straightforward interface
  • πŸ‘ Useful for measuring noise levels
  • πŸ‘ Helpful for hearing conservation
  • πŸ‘ Accurate and convenient
  • πŸ‘ Surprisingly accurate
  • πŸ‘ Clean interface
  • πŸ‘ Stunning masterpiece
  • πŸ‘ Needs more than 5 stars

Room to Improve

  • πŸ› Ads block settings
  • πŸ› Inaccurate readings
  • πŸ› Not sensitive at all
  • πŸ› Dangerously inaccurate
  • πŸ› Unable to record continuously

More Noise Decibel Meter Free apps to explore

FAQ about Noise Decibel Meter Free

What are the best noise decibel meter free apps for iPhone?
Decibel Meter Ultra tops our noise decibel meter free apps ranking as of October 2026, with a 4.6-star average from 2.6K App Store ratings, and it's free to download.
Decibel Meter Ultra has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ noise decibel meter free apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.