Sound meter : SPL & dB meter

11.3

KTW Apps

4.64

51,574 reviews

5,000,000+
Downloads

Free

Measure environment noise to avoid noise pollution from damaging yours hearing

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Sound Meter by KTW Apps turns your phone into a practical SPL and decibel meter for environmental noise. It delivers real-time charts and session timing with clear min/max/avg readings, and it holds TOOLS rankings in SE (#140), PL (#154), and CZ (#168) alongside a solid 4.65 rating from 51,147 reviews. Total downloads exceed 5,000,000+, with 110K downloads in the last 30 days.

Pros & Cons

Real-time SPL readings with live charts
Clear min/max/avg metrics during tests
Session duration tracking for each measurement
Free to use with no upfront cost

Readings depend on device microphone accuracy and may not match professional SPL meters
Requires multiple permissions including RECORD_AUDIO and INTERNET (privacy considerations)
Calibration guidance is not provided, so results may vary across devices

About Sound meter : SPL & dB meter

Sound meter : SPL & dB meter is a tools app developed by KTW Apps.

How many times has Sound meter : SPL & dB meter been downloaded?

Sound meter : SPL & dB meter has been downloaded 5.9 million times. In the last 30 days, the app was downloaded 110 thousand times.

What is the rating of Sound meter : SPL & dB meter?

Sound meter : SPL & dB meter is rated 4.64 out of 5 stars, based on 52 thousand ratings.

Is Sound meter : SPL & dB meter free?

Sound meter : SPL & dB meter is free to download. The APK download size is 6.35 MB. The latest version available is 11.3. The last update was on July 25, 2026.

What are the requirements for Sound meter : SPL & dB meter?

Sound meter : SPL & dB meter requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2018.

Description

Sound Meter is also known as Sound Pressure Level meter (SPL meter) , noise level meter, decibel meter(dB meter), sound level meter or soundmeter.

More data about Sound meter : SPL & dB meter

Price	Free to download
Total downloads	5.9 million
Recent downloads	110 thousand
Rating	4.64 based on 52 thousand ratings
Ranking	Medium ranked
Version	11.3
APK size	6.35 MB
Number of libraries	19
Designed for Android	5.0+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the Sound meter : SPL & dB meter app

Sound meter : SPL & dB meter compared with similar apps

Common keywords of similar apps

Soundmeter Actual Quiet Avoid Adjust Reset Button Provided Fixed Issue Saved Recordings Meter Sound Noise Level Db Decibel Spl Measure Pressure Test Environmental Environment Microphone Decibels Time Display Measuring Health

Keywords missing from this app

App Levels Measurement Hearing Detector Frequency Tool Values Current Features Perfect Loud Easily Analyzer Reference Real Audio Detect Data Professional Easy Pollution Volume Accurate Monitoring Camera Free Phone Device Smart Monitor Human

Google Play Rating history and histogram

43K

4.8K

1.1K

450

2.6K

Downloads over time

Sound meter : SPL & dB meter has been downloaded 5.9 million times. Over the past 30 days, it averaged 3.7 thousand downloads per day.

Changelog of Sound meter : SPL & dB meter

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Developer information for KTW Apps

KTW Apps

ktwapps@gmail.com

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Comments on Sound meter : SPL & dB meter for Android

★★★★★ RealFakeLamps · Aug 7, 2026

I was using decibel x for a long time, and it works great, but without paying I always have to swipe the ad to upgrade away. I use this now and give 5 stars for simplicity and less tapping. Decibel x might have more features for a pro, but I do not use those.

★★★★★ JC Carey · Jul 23, 2026

Aces! I like this app. It's accurate. It has a description of items in the sound range it was registering. For example: I'm in a quiet room with grandfather clock ticking and if you listen carefully you can hear the low roar of the city in the background. The app is registering clock ticking, quiet room and a bit above. Excellent calibration. Speaking of calibration you can adjust it too. Someone took some time with this app. Thank you

★★★★★ David Donovan · Jul 2, 2026

Works amazingly well! I am using it to troubleshoot erroneous hvac blower motor rpm and static pressure readings. The do meter confirms a failed ECM at the blower motor as the do levels are consistent with a much slower fan speed.

★☆☆☆☆ Brack 909 · Aug 13, 2026

Wildly inaccurate. If you believed it's readings you would need earplugs whilst putting your socks on.

★☆☆☆☆ Miguel Salgado · Jul 12, 2026

Not the least bit accurate. I installed this app to test my stero SPL, and it measures very low around 80 to 90 even when it should be at 140db. The gauge moves to much

★☆☆☆☆ E.T. Saffon · Jul 13, 2026

Inaccurate. Not even close. An exhaust without a muffler was quieter that with, lol. It was 5x louder in person. Don't waste your time.

★★☆☆☆ Moonseok Kim · Jul 1, 2026

The calibration doesn't seem to work as intended. When I put +6dB calibration, it actually applies +12dB instead. Need to be fixed for the quick measurement purpose.

★☆☆☆☆ Tom W · Jul 19, 2026

Readings on 2 mobiles side-by-side gives completely different results. Need to calibrate them first.

Google Play Rankings for Sound meter : SPL & dB meter

Top rankings

Rank	Country	Category	List
108	Sweden	Tools	Top Free
157	Poland	Tools	Top Free
166	Switzerland	Tools	Top Free
172	Czech Republic	Tools	Top Free

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Ranking history in Sweden

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Technologies used by Sound meter : SPL & dB meter

Sound meter : SPL & dB meter is requesting 14 permissions and is using 19 libraries.

Permissions

Development tools

test access to protected storage

Network communication

view network connections, full network access, Google Play billing service

Storage

modify or delete the contents of your USB storage

Hardware controls

record audio

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_ADSERVICES_TOPICS, android.permission.FOREGROUND_SERVICE, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID, com.ktwapps.soundmeter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

AdMob

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Support VectorDrawable AndroidX App Startup Android Library Icon

AndroidX App Startup Android WorkManager Android Library Icon

Android WorkManager AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 AndroidX Concurrent Futures Android Library Icon

AndroidX Concurrent Futures AndroidX Multi-Dex Library Android Library Icon

AndroidX Multi-Dex Library AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller AndroidX Privacy Sandbox Android Library Icon

AndroidX Privacy Sandbox MPAndroidChart Android Library Icon

MPAndroidChart

Trust & Safety: Requires microphone access and network permissions (including foreground service for ongoing measurements). Integrates advertising and analytics identifiers (AD_ID) via AdMob and Firebase, and includes a dynamic broadcast receiver not exported for safety.

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