20 Best Decibel Meter Apps for Android and iPhone

Whether you're trying to protect your hearing, diagnose noisy environments, or simply satisfy your curiosity, a decibel meter app can be a valuable tool. These apps, often called noise meter or sound level meter apps, use your phone's microphone to measure sound levels in decibels. We've reviewed dozens of apps to bring you the 20 best, including top picks like Sound Decibel Meter, Sound Meter & Noise Detector, and Decibel X. Each of these apps offers accurate readings, user-friendly interfaces, and helpful features like recording and data logging.

Top app for decibel meter

1. Sound Decibel Meter

Download:

Cost: Free (Free), Sound Meter Pro ($2.99)

Looking for a reliable decibel meter app for your phone? Look no further than Sound Decibel Meter. This app stands out from the crowd thanks to its simplicity and accuracy. It uses your phone's microphone to measure noise levels in decibels, and the results are displayed on a clear and easy-to-read graph. With over 16 million downloads, Sound Decibel Meter has proven itself as a popular choice for people looking to monitor noise levels, whether it's for work, personal use, or even just curiosity. Its intuitive design and helpful features make it a great choice for anyone who wants to get a better understanding of the noise around them.

Sound Decibel Meter - Measures sound level in dB, Displays samples on graph

Key Features:

  • Measures sound volume in decibels
  • Displays sound level on graph
  • Uses built-in microphone for readings

✨ Read more: app for measurements

2. Sound Meter & Noise Detector

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"Sound Meter & Noise Detector" is a handy decibel meter app for mobile devices that empowers users to monitor and analyze noise levels in their surroundings. This app provides accurate decibel readings in real-time, displayed both numerically and visually on a dial and graph, enabling users to track noise fluctuations and identify potential noise pollution sources. While the app offers a user-friendly interface and features like customizable warnings, it's worth noting that it relies on the device's microphone, which may limit accuracy compared to professional sound level meters. However, for everyday noise monitoring and awareness, "Sound Meter & Noise Detector" remains a valuable tool, especially given its 66,700 downloads and positive user reviews.

Sound Meter & Noise Detector - Accurate decibel data, Noise level alerts, Measurement history

Key Features:

  • Accurate decibel readings in real-time
  • Visualize noise levels with graphs and dials
  • Track and review measurement history

3. Decibel X

Download:

Cost: Free (Free), Decibel X Pro ($2.99)

I've tried a bunch of sound meter apps, but Decibel X is the one I keep coming back to. It's not just a gimmick – it's actually accurate. The developers have taken the time to calibrate the app for most devices, and the results are super close to what you'd get with a real-life decibel meter. Plus, it has all the right features like frequency weighting filters, which let you measure sound in different ways. I can trust this app to give me reliable readings, whether I'm checking the noise level at a concert or making sure my workspace isn't too loud.

Decibel X - Trusted accuracy, Frequency weighting filters, Spectrum analyzer

Key Features:

  • Precisely measures sound pressure level (SPL)
  • Supports frequency weightings: ITU-R 468, A and C
  • Calibration for most devices, matching real SPL devices

4. Sound Meter Decibel

Download:

Cost: Free (Free), No Ads ($1.99)

Want to know how loud your environment is? The Sound Meter Decibel app is a super accurate decibel meter that can measure the noise levels around you. It uses your phone's microphone to measure sound in decibels (dB), giving you a precise reading of the sound intensity in your surroundings. What makes this app different is its super sensitive microphone, which can detect even quieter sounds than other apps, making it more precise and reliable. Whether you're curious about the noise levels in your home, office, or a concert, this app will give you the information you need to understand your environment better.

Sound Meter Decibel - Noise level detection, Easy to use interface, Real-time measurement

Key Features:

  • Measures ambient noise levels in decibels
  • Displays current noise level in real time
  • Provides a visual representation of noise levels

5. Sound meter

Download:

Cost: Free (Free), Pro ($2.99)

"Sound Meter" is a handy decibel meter app for mobile devices that allows you to measure ambient noise levels in decibels (dB). This free app provides a simple and intuitive interface, making it easy to track noise pollution and protect your hearing. With over 2.9 million downloads and a 4.4-star rating on Google Play, "Sound Meter" is a popular choice for those seeking a quick and easy way to assess noise levels. While the app's accuracy is limited by smartphone microphone capabilities, it's still a valuable tool for gaining a general understanding of noise exposure.

Sound meter - Measure environmental noise, Display results in decibels

Key Features:

  • Measures environmental noise levels in decibels
  • Displays current noise level in real time
  • Records and saves noise level measurements

Other decibel meter app

The most important factors when choosing a decibel meter app

  1. Accuracy: The most important factor is how accurately the app measures decibel levels. Look for apps that have been calibrated and validated for accuracy.
  2. User Interface: A good app should be easy to use and understand, with clear displays of decibel readings and other relevant information.
  3. Features: Additional features like recording, data logging, and the ability to set noise level alerts can enhance the app's usefulness.
  4. Reliability: Choose an app from a reputable developer with a history of updates and good user reviews.