Sonara: Decibel & Noise Meter

Turn your iPhone into a decibel meter, noise dosimeter and frequency analyzer. Sonara measures sound level in dB in real time, tracks your daily noise dose and exports a clean PDF report. The meter is free, with no ads and no account. WHY SONARA - Transparent readings: weighting, response time and calibration offset are shown on every reading and every report. - Private by design: audio is analyzed on your device and is never recorded or uploaded. - Pay once for Pro. No subscription, nothing to cancel. DECIBEL METER (FREE) - Live dB readout with gauge, waveform, and min, average, max and peak - A, B, C, Z and ITU-R 468 frequency weighting (dBA, dBC and more) - Slow, Fast and Impulse response times - Loud-noise alerts with haptic and visual cues - Keep measuring when the screen locks, with a Live Activity and Dynamic Island view - Calibration offset to match a reference sound level meter NOISE DOSIMETER (FREE) - Daily noise dose, TWA (time-weighted average), LAeq and Lmax - NIOSH 85 dBA and OSHA 90 dBA reference limits - See how long you can stay at the current level before you reach 100% SPECTRUM AND FREQUENCY ANALYZER - Real-time spectrum with 1/3-octave RTA bands and the dominant frequency in Hz - Spectrogram, histogram and waveform views (Pro) HISTORY AND REPORTS - Every session saves automatically, with notes and an optional location label - 3 free PDF reports with graph, dose, TWA, LAeq and Lmax SONARA PRO: ONE PURCHASE, NO SUBSCRIPTION For people who measure and report for a living: - Unlimited PDF reports, branded with your company name - PNG, CSV and JSON export - Spectrogram, histogram and waveform views, full-resolution analyzer bands - Safe Work Australia standard and custom exposure standards - Camera: take a photo with the live dB reading on it Restore your purchase from the Pro page at any time. GOOD FOR Workplace noise checks, concerts and gigs, classrooms, home studios, neighbor noise, home theater, construction sites, and protecting your hearing. IMPORTANT Sonara is not a certified sound level meter or dosimeter. Phone microphones vary, so readings are indicative. Do not use Sonara for hearing-protection, medical or regulatory decisions. For compliance work, use a calibrated instrument and a qualified assessor. NIOSH, OSHA and Safe Work Australia limits are shown for reference; Sonara is not affiliated with or certified by them. Terms of use: https://sites.google.com/view/sonara-termsofuse/home Privacy policy: https://sites.google.com/view/sonara-privacypolicy/home