Sound Meter: Noise Log & dB Live

Most sound meter apps show you a number and stop there. Sound Meter logs it — so you can prove what you heard, not just glance at it. Whether it's a noisy neighbour, a landlord dispute, a workplace safety concern, or checking a nursery is quiet enough, a single reading rarely settles anything. A record does. ★ Real-time decibel meter Point your phone and see the noise level instantly, with a clear quiet/moderate/loud/dangerous reading based on published WHO, EPA and NIOSH noise-exposure guidelines — explained in plain language, not just a number. ★ Log a session, not just a glance Start a session and Sound Meter tracks minimum, average and maximum noise over time — minutes or hours. Add a note. Come back later and see exactly what happened, when. ★ Export as proof Turn a logged session into a PDF with the graph, stats and your note — ready to attach to an email or a complaint. Or export the raw data as CSV. ★ No ads. Ever. Free means free — no interruptions, no "watch an ad to continue." One optional one-time unlock adds unlimited history and export. Pay once, or don't pay at all. ★ Fully offline No account, no internet connection required, no data sent anywhere. Everything is processed on your device and stored locally. ★ Honest about its limits Phone microphones aren't calibrated lab equipment, and we say so — this is a reliable estimate for everyday use, not a certified measurement for legal compliance. Free • Live decibel meter with WHO/EPA/NIOSH-referenced zones • Session logging with graph • Last 3 sessions or 24 hours of history • Notes on every session • Zero ads Sound Meter Pro — one-time unlock • Unlimited session history • PDF export — ready to share as proof • CSV export — raw data for your own records • No subscription, ever — pay once, keep forever Sound Meter: decibel meter, noise meter, sound level meter, dB meter, noise log, noise level app, noisy neighbor app, sound pressure level.