Noisometer: dB Sound Meter

About

Noisometer measures sound levels in dBA and dBC and saves every reading with the time and place it was taken. One purchase. No subscription, no ads, no account. WHAT IT DOES • Live sound level with min, max and Leq (equivalent continuous level) • dBA weighting for perceived loudness, dBC for low frequencies • Every measurement saved automatically with date, duration and coordinates • Full history of past measurements, colour-coded by level • Works entirely offline — nothing leaves your device WHY Leq MATTERS Leq is the energy-averaged level over the whole measurement. It is the figure used when noise exposure is discussed, and it cannot be obtained by averaging decibel readings by hand. BUILT FOR ONE JOB No noise maps, no cloud sync, no themes. Open it, measure, done. ABOUT ACCURACY Readings are estimates. iPhone microphones are tuned for speech and become unreliable above roughly 100 dB. Noisometer is not a certified measuring instrument and should not be used where a calibrated sound level meter is required.