SoundMeter - dB Noise Level

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.