How can we help?

Yes, the meter is free: live dBA, dBC and dBZ, the comparison line, the session graph with min, average and max, calibration, an 85 dB alert and the widgets. Loudmark Pro adds the evidence camera, overnight recording with event clips, PDF reports, your own alert level and reference sounds, all three weightings at once and the Live Activity: $24.99 a year with a 3-day free trial, $3.99 a week, or $34.99 once.

Yes. Loudmark Pro Lifetime is $34.99 once, with no subscription.

Only if you keep it. Loudmark reminds you the day before the 3-day trial ends, and you can cancel any time before then in Settings.

Good enough to compare levels and spot problems, within a few dB on most iPhones. iPhone microphones top out around 95 to 100 dB, so very loud sounds read low, and Loudmark tells you when you're near that limit. For better numbers, calibrate it against a real sound level meter in Settings.

You can share it as supporting evidence with a landlord, managing agent, HOA or council, along with your own notes. Loudmark is not a certified Class 1 or Class 2 sound level meter, and the report says so. Rules differ by place, so ask the body you're complaining to what they need.

No. The meter only measures levels. Sound is saved only when you start a recording, and then only short clips of loud moments, which stay on your iPhone.

Only if you allow it. Loudmark asks for your location while you use the camera so the stamp can name the street or area, for example Brixton, London. Apple's maps service turns it into a place name; we never receive it. Without permission the stamp shows the level, the max, the date and the time.

dBA follows how people hear, so it is the scale used for most noise rules and hearing guidance. Some free apps show dBZ, which counts low rumble you barely hear and can read higher. Loudmark shows dBA by default, and dBC and dBZ are one tap away.

Any iPhone with iOS 26.

Open the Settings app, tap your name, then Subscriptions, then Loudmark, and cancel. You keep Pro until the end of the period you paid for.

Open Loudmark - Decibel Meter, go to Settings and tap “Restore purchases”. Make sure you are signed in with the same Apple ID you used to subscribe.

Open iPhone Settings, tap your name, then Subscriptions, choose the app and tap Cancel Subscription. Cancel at least 24 hours before the renewal date to avoid the next charge. Deleting the app does not cancel a subscription.

Purchases are processed by Apple, so refunds are requested from Apple at reportaproblem.apple.com. Sign in, find the purchase and choose “Request a refund”.

In Loudmark - Decibel Meter, open Settings and tap “Delete my data”. Or email privacy@smallwonderapps.com with the app ID shown in Settings. We delete everything linked to it within 30 days.

Tell us what you were doing, what you expected and what happened instead. Your iPhone model, iOS version and the app version (shown in Settings) help us fix it faster. A screenshot or screen recording is even better.