Sound Meter: Decibel & Noise
dB meter & noise recorder
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Measure decibels in real time, compare with a baseline, export PDF records.
Sound Meter turns your phone into a sound level meter: it measures noise in decibels, keeps the readings, and turns them into a document.
■ Measurement
· 1-min Leq · Lmax · Min/Avg/Max (dB)
· Live waveform
· Microphone calibration — Offset against a reference meter
· Sample rate — Readings per second
■ History
· Leq (1 min) · vs baseline · Samples
· View raw data · Export CSV
· Save audio while measuring — Keep an m4a for playback and evidence
■ Noise Report
· Baseline comparison
· Korean apartment baseline (reference) / WHO reference lines / No baseline
· Daytime / Night
■ Noise measurement record report
· A PDF with timestamps, statistics and the baseline comparison
· These readings come from a smartphone microphone and do not replace a certified sound level meter. The calibration offset applied to each session is listed alongside it. This report provides no legal assessment; an official determination is only possible through measurement under the applicable statutory method.
Recordings stay on this device and are never uploaded.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, CodeSand Co. Ltd., 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CodeSand Co. Ltd.
- Size
- 52 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 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. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 48 more
- English, Arabic, Azerbaijani, Bengali, Bulgarian, Burmese, Cambodian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- A coffee for the developer $2.99
- Coffee + a slice of cake $5.99
- Remove ads $1.99
- Copyright
- © 2026 CodeSand Co., Ltd.