Sound Noise Meter+ dB SPL
WHO/OSHA dosimeter + verdict
About
This app measures sound levels in decibels using your iPhone's microphone. It offers OSHA/NIOSH noise dose tracking, A/C/Z weighting, and calibration for accurate readings. Monitor workplace, neighborhood, or event noise with a clear, color-coded display.
What's New in Sound Noise Meter+ dB SPL
3.2.28
August 15, 2026
New: today's total noise exposure, added up across every session — exposure limits are set per day, but the app only ever showed one session at a time. Also: measuring now starts the instant you tap, and the quiet-room reference tells you when the room is too noisy for it to be reliable instead of just saying "calibrated". Thanks for the reviews and feedback!
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FAQ
What is Sound Noise Meter+ dB SPL?
Sound Noise Meter+ dB SPL is a utility app that uses your iPhone's microphone to measure sound pressure levels (SPL) in decibels. It also provides tracking for 8-hour noise doses according to OSHA and NIOSH standards.
Does Sound Noise Meter+ dB SPL have ads?
Yes, this app contains advertisements. As it is free to download and use, advertisements are displayed to support its development and maintenance.
How accurate is Sound Noise Meter+ dB SPL?
The app offers features like one-tap Quiet Room calibration and manual adjustment up to ±20 dB for precision tuning. However, accuracy can vary based on the iPhone model and its microphone.
What devices does Sound Noise Meter+ dB SPL support?
Sound Noise Meter+ dB SPL is supported on iPhone and iPod devices. It is designed for iOS operating systems.
What is the age rating for Sound Noise Meter+ dB SPL?
The app has an age rating of 17+. This is likely due to the nature of measuring potentially high decibel levels and the professional context of its features.
How often is Sound Noise Meter+ dB SPL updated?
The latest version of Sound Noise Meter+ dB SPL is 3.2.13, and it was last updated on May 26, 2026. This indicates a recent update, suggesting ongoing support and development.
Can Sound Noise Meter+ dB SPL be used offline?
The core functionality of measuring decibel levels and tracking noise dose can be performed offline as it relies on the device's microphone. However, some features might require an internet connection for calibration data or updates.
What are the different weighting options in Sound Noise Meter+ dB SPL?
Sound Noise Meter+ dB SPL allows you to toggle between A, C, and Z weighting. These different weightings simulate how the human ear perceives sound at various frequencies, offering different perspectives on noise measurement.
