SoundMeter: Decibel dB
Decibel Sound Measurement
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Turn your iPhone into a professional decibel meter. Real-time dB with A/C/Z weighting, spectrum analyzer, session recording, and NIOSH exposure guide.
Measure sound levels with professional-grade accuracy. SoundMeter turns your iPhone into a powerful decibel meter with real-time dB readings, spectrum analysis, and session recording.
REAL-TIME SOUND MEASUREMENT
- Instant decibel (dB) readings with A, C, and Z frequency weighting
- Fast and slow time weighting for different measurement needs
- Live min, max, average, and peak level tracking
- Color-coded safety categories based on NIOSH exposure guidelines
VISUAL SOUND ANALYSIS
- Beautiful arc gauge with smooth animated needle
- Scrolling timeline graph showing sound levels over time
- Color gradient from safe green through warning orange to danger red
- Sound level reference chart comparing to everyday sounds
SESSION RECORDING & HISTORY
- Record measurement sessions with one tap
- Review past recordings with full statistics
- Timeline graph replay of recorded sessions
- Organized history with date, duration, and average level
PRO FEATURES (One-Time Purchase)
- Spectrum Analyzer: 32-band FFT frequency visualization
- Unlimited session history (free tier: 3 recordings)
- CSV data export for professional reports
- Calibration profiles for different environments
- Threshold alerts with haptic feedback
SOUND REFERENCE GUIDE
- Compare your readings to common sounds (whisper to jet engine)
- NIOSH safe exposure time recommendations
- Understand noise risk levels for hearing protection
PERFECT FOR
- Workplace noise assessment and OSHA compliance
- Environmental noise monitoring
- Music and event sound level checking
- Hearing health awareness
- Classroom and office noise management
- Construction site safety monitoring
Built with professional audio engineering principles including IEC 61672 frequency weighting standards. While not a replacement for calibrated professional equipment, SoundMeter provides reliable relative measurements for everyday noise awareness and safety.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, MOBILE ALCHEMY 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 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
- MOBILE ALCHEMY LTD
- Size
- 10.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 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
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Small Tip $0.99
- Large Tip $4.99
- SoundMeter Pro $4.99
- Copyright
- © Mobile Alchemy LTD