dB Monitor Pro

dB Monitor Pro turns your iPhone into a real-time sound level meter. Open the app, grant microphone access, and instantly see the ambient noise level in decibels. WHAT YOU GET - Live decibel reading displayed on a circular gauge - Real-time audio waveform visualization - Min and max level tracking across your session - One-tap reset to start fresh - Clean, dark interface designed for quick glances HOW IT WORKS dB Monitor Pro uses your device's microphone to sample ambient sound and compute a decibel reading. All audio processing happens entirely on your device — nothing is recorded, stored, or transmitted. The app begins measuring as soon as you grant microphone permission. No account required, no setup, no paywall. PRIVACY FIRST No accounts. No analytics. No tracking. No data leaves your device. The microphone is used solely for sound level measurement in real time. See our full privacy policy for details. IMPORTANT NOTICE dB Monitor Pro provides approximate sound level readings that depend on your device's microphone hardware and calibration. It is NOT a certified, calibrated, or professional sound measurement instrument. Do not use this app for occupational safety (OSHA compliance), legal noise documentation, professional audio engineering, medical or hearing-related decisions, or any purpose requiring certified measurements. For accurate and legally compliant readings, use professionally calibrated equipment.