dB Logger: Sound Level Meter
Raw dBA SPL meter · No subs
About
Transform your device into a professional sound level meter and analyzer. Capture raw audio, log noise levels over time, and generate detailed reports. Ideal for assessing noise exposure, troubleshooting sound systems, or documenting noise complaints.
What's New in dB Logger
4.0
June 30, 2026
Version 4.0 introduces a full version. dB Logger is now free to download and fully usable for live measurement — the real-time meter, gauge, spectrum, spectrogram, analyzer and dosimeter are all free and unlimited. The free version also lets you record, export and film video for up to 30 seconds, so you can try the whole workflow; those trial clips, exports and reports carry a small "Trial" mark, and the free version keeps two days of dosimeter history. Unlock the full version with a single one-time purchase — no subscription, ever — for unlimited recording, unlimited CSV/WAV/PDF export, full-length video with no watermark, the full dose history, and no ads. If you already bought "Remove Ads", thank you — you're upgraded to the full version automatically at no charge; just tap Restore Purchases in Settings if it doesn't show right away. Thanks for the feedback — keep it coming at bekserviceltd@gmail.com.
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FAQ
What is dB Logger used for?
dB Logger turns your phone into a professional sound level meter, frequency analyzer, and noise logger. Users employ it to measure noise from neighbors, assess concert loudness, check baby white-noise machines, and evaluate room acoustics for HVAC work.
Does dB Logger have ads?
Yes, dB Logger contains advertisements. Users can remove the single banner ad by making a one-time purchase of $3.99.
How accurate is dB Logger?
dB Logger targets reproducible, calibrated relative measurement with standards-correct weighting and rating math. For regulatory or compliance decisions, it is recommended to verify with certified instrumentation as a smartphone microphone is not a certified Class 1/2 sound level meter.
Can I export my sound data from dB Logger?
Yes, dB Logger allows you to log metrics to CSV and raw audio to lossless WAV, independently. You can browse saved sessions and generate PDF/CSV reports, and even use the 'Noise Camera' feature to capture a photo with the live dB reading burned in.
Does dB Logger require a subscription?
No, dB Logger does not require a subscription. The app offers a one-time purchase option to remove ads, but all features are available for free, with no subscription model.
What devices is dB Logger compatible with?
dB Logger is available for iPhone, iPad, and iPod. It supports iOS devices and is designed to work with both built-in microphones and external USB-C measurement microphones.
How often is dB Logger updated?
The latest version of dB Logger is 3.7, which was last updated on June 23, 2026. Updates typically include feature enhancements and bug fixes.
Is dB Logger private and secure?
Yes, dB Logger is built for on-device and private use. It does not require an account or cloud storage, meaning your audio and readings remain on your phone unless you choose to share them.