dB MeterdBA by default, dB SPL when you want it.
A-weighting matches how people hear, and the switch to flat dB SPL is one tap away. The gauge changes colour as levels move from quiet to harmful.
Sound-level meter
See how loud it really is.
dB Meter reads your phone's microphone in real time and shows the level the way a meter does: a big neon gauge, min, average and max, a live trace, and a 24-band spectrum. Save a reading, add a note, and export a clean PDF report.
Coming soon to the App Store and Google Play. iPhone and Android.
Min, Leq average and max.
The average is an energy average, the right way to average decibels. One value per second is kept for the trend chart.
24 bands, 50 Hz to 16 kHz.
A real-time analyzer shows where the energy sits, so a rumbling fridge and a whining fan look different.
Save it, label it, explain it.
Every saved reading keeps its stats, its trend and your notes. Pick several and export them together.
A report you can hand to someone.
Cover page, summary, and one page per reading with its chart, in the app's own style.
Audio never leaves the phone.
Sound is turned into numbers on the device as it is heard. Nothing is recorded, and no audio is ever sent anywhere.
About accuracy
A phone microphone is not a calibrated instrument. dB Meter turns off the phone's automatic gain and voice processing and uses a per-platform reference level, so the number reads like dB SPL, but every phone is different. For real work, calibrate against a reference meter using the offset in the tune menu, and treat the readings as a guide, not a certified measurement.
Pricing
dB Meter is a subscription. Start with 3 days free; the store charges you on day 3 unless you cancel. Cancel any time in the App Store or Google Play and keep access until the period ends.
Monthly$0.99per month after 3 free days
Yearly$9.99per year after 3 free daysAbout two months free
Prices are set in the stores and may differ by country. The price you see in the app is the one that applies.
No account needed. One is offered.
You can subscribe and use everything without signing up for anything. If you want your readings backed up and available on another phone, iPhone or Android, create an account in Settings. It is optional, and you can delete it any time.
Moving to a new phone without an account? Tap Restore Purchases on the paywall. Your subscription comes back. Readings only follow you if you had an account.
The fine print
Privacy policy · Terms of use · Support · Delete your account