Best Decibel Reader Free Apps

230+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

Finding the right decibel reader free apps can be overwhelming with so many options. We've analyzed 230+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Decibel Reader Free Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel Meter Sound DetectorDecibel Meter Sound DetectorFree4.7★ (54K)NoYesJul 2026
2Sound Meter (Decibel)Sound Meter (Decibel)Free4.6★ (2.6K)YesNoJul 2026
3Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.7★ (156K)NoYesJul 2026
4NIOSH Sound Level MeterNIOSH Sound Level MeterFree4.7★ (16K)NoNoJul 2026
5Decibel : dB sound level meterDecibel : dB sound level meterFree4.6★ (36K)YesYesJul 2026
6Decibel Meter MasterDecibel Meter MasterFree4.6★ (2.9K)NoNoJul 2026
7Rah Book ReaderRah Book ReaderFree4.7★ (8.9K)NoNoJul 2026
8eBoox - fb2 ePub book readereBoox - fb2 ePub book readerFree4.8★ (2.9K)NoNoJul 2026

Top Picks for Decibel Reader Free

Decibel Meter Sound Detector#1

Decibel Meter Sound Detector by Ashraf Thoppukadavil

Track noise around you.
Editor's Choice
📊 Productivity
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

Room to Improve

  • 🐛 Ads block settings
  • 🐛 Inaccurate readings
  • 🐛 Not sensitive at all
Sound Meter (Decibel)#2

Sound Meter (Decibel) by Unicom TOV

Measure the noise level
Strong Contender
🔧 Utilities
4.6😐(2.6K ratings)
FreeAds
Sound Meter (Decibel) screenshot 1
Sound Meter (Decibel) screenshot 2
Sound Meter (Decibel) screenshot 3
Sound Meter (Decibel) screenshot 4
Sound Meter (Decibel) screenshot 5
Sound Meter (Decibel) screenshot 6

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

  • 🚀 Works perfectly
  • 👍 Easy to use and free
  • 👍 Good simple UI
  • 👍 Good basic sound level meter

Room to Improve

  • 🐛 Spelling mistake ('quiet' spelled as 'quite')
  • 🐛 Inaccurate readings compared to other apps
  • 🐛 Requires a subscription for basic recording
Decibel X:dB Sound Level Meter#3

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

Frequency Spectrum Analyzer
Worth Considering
🔧 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

More Decibel Reader Free apps to explore

4
NIOSH Sound Level Meter
NIOSH Sound Level Meter
NIOSH Sound Level Meter
by EA LAB
Free

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.

Sound level measurementNoise dosimetryHearing hazard information
🔧 Utilities
(16K)
free
5
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
6
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
7
Rah Book Reader
Rah Book Reader
Rah Book Reader
by Majid Sharifi
Free

This application allows users to download and read PDF documents and audiobooks. It offers a simple and free experience for accessing digital content on mobile devices.

Download PDF documentsRead audiobooksSimple interface
📚 Books
(8.9K)
free
8
eBoox - fb2 ePub book reader
eBoox - fb2 ePub book reader
eBoox - fb2 ePub book reader
Read books comfortably
Free

This application provides a comfortable and customizable reading experience for a wide variety of e-book formats. It offers features like bookmarks, highlights, dark mode, and offline reading, with seamless online synchronization. Books can be easily uploaded from various sources, including cloud storage and email.

Supports EPUB, MOBI, FB2, DOC, TXT, and moreCustomizable fonts, text size, and brightnessDark mode and offline reading
📚 Books
(2.9K)
free
9
Decibel Reader
Decibel Reader
Decibel Reader
Measure decibels - SPL meter
Free

Measure ambient noise levels with real-time readings, tracking minimum, average, and maximum decibels. Offers calibration for accuracy and a dark mode for comfortable viewing. This tool helps you understand your sound environment.

Real-time decibel measurementCalibration for accuracyTrack min, average, and max noise levels
🔧 Utilities
(24)
free with in-app purchases
10
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
11
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
12
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
Read books & PDF files easily!
Free

This app allows you to read and listen to books and documents in various formats, including PDF and EPUB. It offers text-to-speech functionality, customizable reading settings, and a built-in book manager for your library. Enjoy an ad-free and registration-free reading experience.

Multi-format ebook support (EPUB, PDF, MOBI, DOCX, etc.)Text-to-Speech (TTS) for listening to booksAd-free and registration-free experience
📚 Books
(222)
free
13
Decibel Meter - Sound Level dB
Decibel Meter - Sound Level dB
Decibel Meter - Sound Level dB
Audio Noise Frequency Analyzer
Free

Measure ambient noise levels and sound exposure duration in real-time. This app displays acoustic intensity in decibels with detailed visual reports and supports photo/video overlays with noise data. Protect your health from noise pollution.

Real-time decibel meterMIN, AVG, MAX sound level displayNoise dosimeter (NIOSH/OSHA compliant)
🔧 Utilities
(1.2K)
subscription
14
Read4Me - Talk Browser PDF DOC
Read4Me - Talk Browser PDF DOC
Read4Me - Talk Browser PDF DOC
Listen Web, TTS, Text to Audio
Free

Transform any web page, PDF, or scanned document into an audio experience. Listen to content at your preferred speed with natural-sounding voices. Ideal for hands-free consumption of digital and physical text.

Listen to web pagesConvert PDFs to audioScan and listen to books/papers
🔧 Utilities
(5.1K)
free with in-app purchases
15
SoundLevel: Decibel Reading
SoundLevel: Decibel Reading
SoundLevel: Decibel Reading
by Smudge Apps Ltd
Free

Measure ambient noise levels with calibrated dBA readings that mimic human hearing. Compare current sound levels to familiar benchmarks and review historical data with intuitive graphs. Export your findings for further analysis with optional pro features.

Quick sound level measurementsCalibrated dBA readingsComparison values
🔧 Utilities
(4)
free with in-app purchases
16
Decibel : dB Noise Level Meter
Decibel : dB Noise Level Meter
Decibel : dB Noise Level Meter
Audio Sound Frequency Analyzer
Free

Measure, analyze, and protect your hearing with this comprehensive sound level meter. It offers real-time decibel readings, noise exposure monitoring, and tools for audio exploration like frequency generation and speaker cleaning.

Real-time sound level measurement (dB)Noise exposure monitoring (Dosimeter)Interactive recording and visualization
🔧 Utilities
(250)
free with in-app purchases
17
Text to Speech - SayTXT Reader
Text to Speech - SayTXT Reader
Text to Speech - SayTXT Reader
Read Aloud, Voice & Audio Book
Free

This app converts any text into natural-sounding audio, allowing you to listen to articles, PDFs, and more. It offers unlimited, free text-to-speech with customizable voices and playback speeds, acting as a helpful reading assistant for various needs.

Unlimited free text-to-speechReads PDFs, web pages, and pasted textHigh-quality natural voices
📰 Magazines & Newspapers
(292)
free
18
Text To Speech Audio Reader
Text To Speech Audio Reader
Text To Speech Audio Reader
Read Out Loud For Me
Free

Convert text into spoken audio with this easy-to-use application. Import text files or type your own content, and have it read aloud. Features include navigation controls, sentence highlighting, and a variety of voice options.

Import text filesType and read textFast forward/backward navigation
🔧 Utilities
(1.7K)
free
19
ElevenReader: Read Books Aloud
ElevenReader: Read Books Aloud
ElevenReader: Read Books Aloud
Reader for Books, PDFs & Docs
Free

This app transforms any text into realistic, AI-powered audio narration. Listen to books, PDFs, documents, news, and blogs in over 32 languages with natural-sounding voices. Features include text highlighting, bookmarking, and flexible playback speeds.

AI-powered text-to-speechReads books, PDFs, and documents32+ languages with natural voices
📊 Productivity
(9.5K)
free with in-app purchases
20
PocketBook Reader
PocketBook Reader
PocketBook Reader
PDF, EPUB, FB2, Audiobooks
Free

This app is a versatile reader supporting 26 book and audio formats, including EPUB, PDF, and audiobooks. It offers features like PDF reflow, text-to-speech, cloud synchronization, and extensive customization options for a comfortable reading experience.

Supports 26 book and audio formatsPDF Reflow functionText-to-speech engine
📚 Books
(8.8K)
free with in-app purchases

FAQ about Decibel Reader Free

What are the best decibel reader free apps for iPhone?
Decibel Meter Sound Detector tops our decibel reader free apps ranking as of July 2026, with a 4.7-star average from 54K 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 July 2026.
We track 230+ decibel reader free apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app functions as a decibel meter, using your device's microphone to measure and display sound levels in decibels (dB) in real-time. It provides clear visual noise analysis and supports advanced filtering for frequency and dB ranges.
Key features include accurate dB measurements, various frequency weighting options (A, B, C, Z), the ability to share readings via email and messaging apps, 1/3 octave band frequency analysis, and display of current, average, and maximum sound values.