DawnSoundMeter Pro

Decibel Meter Pro is a professional, easy-to-use environmental noise monitoring tool built for iOS. Powered by native audio technology, it delivers accurate real-time sound level measurements and evidence-based health guidance, all running locally on your device with no internet required. ▸ REAL-TIME NOISE MEASUREMENT Tap once to start measuring. Get instant decibel (dBA) readings displayed in large, clear numbers with a dynamic sound waveform. The interface color changes automatically to indicate noise risk levels at a glance. ▸ COMPLETE PROFESSIONAL METRICS Beyond basic decibel values, the app calculates full acoustic parameters commonly used in professional testing: • Instantaneous sound level • Equivalent continuous sound level (Leq) • Maximum / Minimum sound level (Lmax / Lmin) • Percentile sound levels (L10, L50, L90) ▸ SCIENCE-BASED HEALTH ASSESSMENT Based on WHO and EPA public noise guidelines, the app provides clear, easy-to-understand conclusions: • Noise risk level classification • Potential health impact description • Scenario suitability judgment (living, sleeping, working, studying) • Practical suggestions for noise improvement ▸ MEASUREMENT HISTORY & EXPORT All measurement records are saved locally on your device. You can add custom notes, view detailed reports, share results, or export data as CSV files at any time. ▸ KEY FEATURES • One-take measurement, no complicated setup • Supports background continuous monitoring • Multiple reference standards available • Dark / Light mode automatic adaptation • 100% offline, no login required • No ads, no data collection --- Important Notice: This application is for general reference and educational purposes only. It is not a professional sound level meter or medical device. Measurement results may vary by device hardware and environment. Do not use it for industrial safety testing or medical diagnosis.