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Decibel Metre (Sound Meter)

Decibel Metre (Sound Meter)

Measure the environment noise

577 ratings
123 reviews
With Ads
🔧 Utilities
📊 Productivity
Free
With Ads

Details

Released
October 19, 2021
Updated
September 7, 2025

Features

Developer

UniCom Technology
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About

This application functions as a smart sound level meter, utilizing your device's microphone to measure ambient noise in decibels (dBA). It provides real-time readings on a digital screen and displays historical data through a graph. The app also shows reference noise levels and tracks minimum, average, and maximum decibel values.

✓Measures sound level in decibels (dBA)
✓Uses built-in microphone
✓Displays readings on digital screen
✓Shows current noise reference
✓Tracks min/avg/max decibel values
✓Visualizes decibel data on a graph
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What users say about Decibel Metre (Sound Meter)

Reviews of Decibel Metre (Sound Meter) are mixed: the Utilities app is rated 4.5/5 from 577 App Store ratings. What users like most: simple and easy to use, helpful tool for measuring sound levels. Top complaints: inaccurate readings, inconsistent measurements. Summarized from real user reviews.

Positive things

  • 👍Simple and easy to use
  • 👍Helpful tool for measuring sound levels
  • 👍Straightforward and effective
  • 👍Genuinely free and useful

Negative things

  • 🐛Inaccurate readings
  • 🐛Inconsistent measurements
  • 🐛Reset button doesn't reset average value
  • 🐛No calibration feature
See all reviews

What's New in Decibel Metre (Sound Meter)

1.7

September 7, 2025

Fixed crash bug

User reviews

Most RecentHighest RatedLowest Rated

作者好。这是什么问题啊

不太明白external meter和quiet room怎么用 我quiet room测量最高70 externalmeter就100db 我在安静房间测量
哈哈蒙德风琴

Response from developer

感谢你的反馈，也理解你的困惑。 “Quiet Room”和“External Meter”通常是不同的测量模式或校准方式，结果会因为参考基准不同而产生差异。在安静环境中，如果两种模式读数差距较大，可能与设备麦克风灵敏度、自动增益控制或校准参数有关。 建议你在同一环境下多次测试，并保持手机固定位置，以获得更稳定的对比结果。如果问题持续出现，请提供设备型号和应用版本，我们可以进一步帮你排查。

Recommended

Great app great UX no nonsense
GUGreatly satisfied user

Not sure I understand!

Thanks for developing this app - I want to use it to try and understand the difference between appliances before I spend. But just having the app open logs in at 42dcb am I supposed to be able to set it somehow? Or is this the ambient noise level?! Feel I need a few basic instructions built in. Thanks.
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FFran_M81

異様に大きく出る

深夜、感覚的には無音状態なのに常時43dbってことはないでしょ？
他のアプリより20db位大きく出る。信頼できない。
真真面目にやってる？

Response from developer

ご意見ありがとうございます！ 静かな環境でも数値が出るのは、端末マイクの感度や周囲の微小なノイズ、キャリブレーション差による影響です。他のアプリとの差も同様の要因で発生することがあります。現在、精度と安定性の改善に取り組んでいます

Inaccurate

Completely inaccurate compared to genuine calibrated app like NIOSH
J7John 12 85 73
See 118 more reviews

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User experience

🐞

Reported Bugs

2 issues

Microphone not registering any noise

Bug

Completely unresponsive app

Bug
✨

Requested Features

3 requests

Quiet room label correction

Feature

Add fast and slow response time settings

Feature

Ability to export/save measurement logs and graphs

Feature

FAQ

What does the Decibel Metre app do?

This app functions as a smart sound level meter for iOS devices. It uses your device's built-in microphone to measure ambient sound volume in decibels (dBA) and displays this information on a digital screen. It also provides a graphical representation of sound samples over time.

What are the key features of this sound meter app?

Key features include indicating decibel levels on a digital screen, displaying the current noise reference, showing minimum, average, and maximum decibel values, and visualizing decibel levels on a graph line. It leverages your device's microphone for measurements.

Is this app free to use?

The application is free to download and use. However, it does display advertisements to support its development and operation. There are no in-app purchases mentioned for additional features or ad removal.

What devices is this decibel meter compatible with?

The app is designed for iOS devices. It utilizes the device's built-in microphone to perform sound level measurements. Specific iOS version compatibility is not detailed but it is an iOS application.

How can I use this app to measure noise?

Simply open the app and it will begin measuring the sound level around you using your device's microphone. You can observe the real-time decibel readings on the digital screen, see reference noise levels, and track min/avg/max values. The graph feature helps visualize sound fluctuations.