Decibel is a feature-rich sound level meter with sleep tracking, a noise dosimeter, and an advanced Spectrum Analyzer with RTA, FFT, and spectrogram modes.
Decibel turns your device into a powerful sound level meter without any extra hardware. Measure ambient noise in real time, monitor sound levels (dB), and explore frequencies with the built-in Spectrum Analyzer. Capture reliable sound and noise data wherever you are.
Designed for casual users, audio enthusiasts, and sound engineers, Decibel works as a portable sound meter for quick sound checks or deeper audio analysis. Use it to easily check noise levels, test room acoustics, monitor workplace noise, or fine-tune audio equipment. Decibel has various advanced features, including saving and exporting noise measurement data, live sound level overlays for photos and videos, and exporting data to the Health app to track noise exposure over time.
“The best way to meter sound levels” — AppAdvice
SLEEP TRACKING AND SOUND RECOGNITION
Decibel’s sleep tracking and smart sound recognition help you understand your sleep environment and nighttime noise. While sleep tracking is active, the app can detect common sleep sounds such as snoring, coughing, talking, and other household or environmental noise that may affect sleep quality.
Each detected sound appears on a detailed sleep timeline, so you can see exactly when disruptions occurred and play back the related audio. This makes it easier to identify snoring patterns, sleep disturbances, and noise events that impact your rest.
All sleep sound recognition and audio analysis are performed entirely on your device using advanced on-device machine learning. Recordings stay private, are processed locally, and never leave your device.
KEY FEATURES
- Visualize ambient sound levels and decibel (dB) readings in real time
- Sync with the Health app to track and export noise exposure data
- Add live sound level overlays to photos and videos
- Save sound measurements with location data and custom labels
- Record, store, export, and play back sound measurements
- Export sound and noise data in CSV or audio formats
SPECTRUM ANALYZER
- Integrated Spectrum Analyzer with FFT and spectrogram modes
- Multiple FFT sizes up to 16,384 points with selectable window functions
- Flexible visualization modes and graph styles
- Octave Band Real-Time Analyzer (RTA) for detailed frequency analysis
EXTERNAL MICROPHONES AND CALIBRATION
- Support for external microphones
- Calibrate connected microphones directly in the app
- Create and manage custom profiles for different microphones
REPORTING AND EXPORT
- Generate detailed noise measurement reports, including LAeq values
- Batch export multiple measurements in supported formats
Decibel app is not a replacement for professional devices and should be used for personal purposes only. By using this app, you acknowledge and agree that the developers and publishers are not liable for any decisions made based on the information provided by the app.
SUBSCRIPTIONS
Decibel offers optional subscriptions that unlock advanced tools and ongoing feature enhancements.
With a subscription, you get access to an expanding set of professional Spectrum Analyzer features, advanced sound level weighting modes, and continued updates for compatibility with new devices and hardware. Subscriptions also include support for external microphones, unlimited saving and exporting of measurements, batch export tools, and audio and video exports with sound level overlays.
Payment will be charged to your Apple account at confirmation of purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. You can manage or disable auto-renewal at any time in your Apple ID account settings.
By downloading and using the app, you agree to the following:
Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518
Privacy Policy: https://www.iubenda.com/privacy-policy/94359518
Disclaimer: http://dbmeterpro.com/disclaimer.html
Questions or feedback? Contact us at support@decibelpro.app
I’m not using the service.Cancel my subscription immediately and refund at least part of the payment.
Developer Response
Thank you for your feedback. If you started a subscription but did not want to, please read more about cancelling a subscription to Decibel here: https://decibelpro.app/blog/how-to-cancel-db-meter-subscription/. If you want to request a refund, please see Apple's official guide here: https://support.apple.com/en-us/118223
Please add Impulse Response
faNdyyy
Please add Impulse Response feature..
Developer Response
Thank you for using db Meter. Will add such a feature in upcoming updates.
SCAM
vjindra
When the sound test is deliberately slowed down one of the right side , why do I know? Because I flipped the power headset, when l flipped the sound that was quiet on the right side turned out to be quiet on the left side too
Developer Response
Thank you for sharing your feedback on using Decibel, I appreciate it. At the same time, I am sorry to hear that you were less than happy with the app's functionality. I can only think of one reason why the app's readings were off and that is a bug because Decibel is calibrated with high-quality equipment and a lot of work continuously goes into maintaining and improving its accuracy. If, at any time, you believe the app is inaccurate or you encounter any other issue, please go to Settings and use one of the options under Feedback to get in touch with me. I will do my best to identify and fix any bugs keeping you from fully enjoying the app. Wish you all the best and hope you continue using and enjoying Decibel!
SCAM GIVE BACK MY MONEY
A SCAM!
Freaking scam
Developer Response
Hello and thank you for your feedback! Please allow me to clarify what seems to be a misunderstanding. The Decibel app has a free version and a Pro version. If you do not need the Pro features and want to use the app for casual needs like measuring noise levels and testing your hearing, you can use the free version by simply closing the subscription screen that appears after download when you first open the app by using the X in the upper corner of the screen. If you made a purchase you did not intend to make, please use Apple's official guide available here to request a refund: https://support.apple.com/en-us/118223 Wish you all the best!
• UI optimizations for iPhone Air
• In some rare cases, audio processing caused the app to crash on iOS versions prior to 26. This update may fix this issue.
Do you like the new version of the app? Share your review on the App Store.
Do you dislike anything about it? All the more reason to say something!
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Version 9.5.3
In-App Purchases
Spectrum Analyzer Pack
Full access to FFT, Spectrogram & Octave RTA
Rp 399ribu
Decibel Meter Pro
Save. Export. Get access to dB-A, C, Z
Rp 349ribu
Noise Dosimeter Pro
Get notifications & measure in background
Rp 169ribu
dB Meter Premium Pack
Lifetime access to all features
Rp 799ribu
The developer, Vlad Polyanskiy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Health & Fitness
Purchases
Location
Identifiers
Usage Data
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
Vlad Polyanskiy
Size
58.8 MB
Category
Utilities
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
