Know Exactly How Loud It Is
A real-time sound level meter in your pocket. Measure noise with professional A, C and Z frequency weighting, track your exposure, and keep every measurement in your records.
Download on the App StoreFeatures
🎚️ Real-Time dB Readings
Live sound pressure levels straight from your microphone, with a rolling graph of the last two minutes.
📐 A, C and Z Weighting
Switch between the IEC 61672 weighting curves and Fast (125 ms) or Slow (1 s) response to match how professional meters read.
📊 Min, Average, Max & Peak
Every session tracks the minimum, the true energy average (Leq), the maximum and the unsmoothed peak level.
🛡️ Noise Dose Tracking
See your exposure as a percentage of the NIOSH daily limit — 85 dB over 8 hours with a 3 dB exchange rate.
🎥 Camera Mode
Put the live decibel readout on top of what your camera sees and record the whole thing as a clip you can share.
🗂️ Saved Records
Name your measurements, tag them with the place they were taken, and open any of them again with the full graph and statistics.
🎯 Calibration
Line the app up with a reference meter once, and the correction is applied to every measurement from then on.
📖 Noise Reference Table
Seven decibel bands with everyday examples — from a whisper at 30 dB to a jet takeoff at 130 dB — colour-coded from safe to dangerous.
🔍 Simple or Detailed
Start with just the number. Switch to the detailed view for the frequency spectrum and the dominant frequency when you need it.
Built for Every Kind of Noise
Check whether a workshop needs hearing protection, settle an argument about the neighbours, document noise in a rented flat, find the quietest table in a restaurant, or keep an eye on how loud a concert really got. Decibel Meter works entirely on your device — no account, no sign-up.