Decibels Sound Level Meter
A-Weighted Noise & Reports
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Sound Level Meter is an iOS tool for everyday environmental noise measurement—see levels in the field, keep a log, and share a polished Pro report when you need one.
Features • Live A-weighted sound level with Fast / Slow time weighting
• Session stats: energy-style average (LAeq) and peak (LAmax-style)
• Acoustic calibration offset to align with a reference source
• History with custom titles and optional location notes
• Export CSV / JSON and Pro PDF measurement reports
• Education: hearing & decibels, typical noise level ranges
Good for
Home and office background noise, street/neighbor logging, DIY checks around renovations or equipment, quick reference notes and sharing.
Disclaimer
Readings are estimated from the phone microphone and software. Results vary with device, mic sensitivity, handling, wind, reflections, and calibration. Outputs are for personal reference, logging, and sharing only—not legal metrology, certified lab reports, or compliance determinations. Use a calibrated standard sound level meter and qualified professionals when precision matters.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, NAICAI LI, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- NAICAI LI
- Size
- 1.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 NAICAI LI