Nightchart — Noise Meter

Nightchart is a noise meter and decibel (dB) meter that logs neighbor noise all night — footsteps, music, barking — and checks it against real noise limits. • Judgments against real limits: Korea's apartment noise rules, the UK Noise Act night-time level, or WHO guidelines • Night Watch logs only the moments over the limit while you sleep • Incident log: one tap on "Noisy now" saves the time, type and a note • PDF reports of sessions and incidents, ready to hand in • A real sound level meter: A/C/Z weighting, Fast/Slow, LCpeak, 1/1 and 1/3 octave bands, NIOSH hearing exposure • No audio recording by default • Honest about accuracy: not a certified meter, and it shows you how to calibrate Measuring and the incident log are always free. Recording sessions, Night Watch and report PDFs come with a one-time lifetime pass. No subscription, ads or account. Android app.