Monitor
Live dB readings, waveform, spectrum analysis, Leq, and max/min/average stats. Start and stop monitoring with one tap.
iOS · Noise & Evidence
Measure, record, and document noise on your iPhone
Real-time decibel monitoring, voice-activated audio capture, and video evidence with burned-in dB overlays — built for everyday noise checks and serious documentation.
Features
Everything you need in one app
Five focused tools — from live monitoring to exportable evidence files.
Voice
Voice-activated recording when sound exceeds your start threshold. Optional AI noise classification to record only selected sound types.
Video
Record evidence video with decibel watermark, timestamp, and GPS burned into every frame. Pinch to zoom up to 5× on the live preview.
Files
Browse, play, share, rename, and export voice recordings and video clips. Sort by date, peak level, or name.
Settings
Switch measurement modes, A/C/Z weighting, device calibration, and background monitoring. Available in 9 languages.
Reports & Export
Generate silence rating reports and export measurement logs as CSV for your records.
Measurement modes
Two ways to read the room
Choose the mode that matches your goal — subjective hearing or full-band physical energy.
Human Hearing Mode
Simulates how the ear perceives sound. Best for everyday speech, TV noise, neighbor disputes, and comparing against residential noise guidelines. Readings match how loud it sounds to you.
Full-Band / Low-Frequency
Captures true physical sound energy — AC units, fridge compressors, pipe rumble you may not notice. Readings are often higher than standard mode. Ideal for hidden noise sources and evidence gathering.
Disclaimer:
NoiseRecord uses your iPhone microphone for reference-level measurements.
It is not a certified sound level meter. Readings are useful for comparison and documentation,
not for legal metrology certification.
Download
Available on the App Store
Requires iOS 18.6 or later. Microphone access required; camera and location for video evidence.
Download on the App StoreUpdate the App Store URL in website/index.html after App Store Connect assigns your app ID.