LeakSonarWater leak finder
Phone to the wall. Hear where it's loudest. Before you pay a plumber.
Guided listening compares spots on walls, pipes and floors and shows you the loudest one — and tells you honestly when the job needs a professional.
Get LeakSonarScan the code with your phone’s camera, or open the store.
Two comparison spots are free; the full hunt is a one-time purchase.
A reading narrows where to look; it is not a reason to cut into a wall before someone has confirmed it. Read the rules of safe use before you start — they take a minute and they are the ones that matter.
The seven screens from the Google Play listing — swipe.
How it works
- Answer three questionsIs every tap really off? Can you see the meter — and does its smallest dial move in two minutes? Where does it sound loudest? When the honest answer is "this needs a pro" — a silent leak, a concrete slab, a fast-spinning dial — the app says so first, and for free.
- ListenPress the bottom edge of the phone firmly against the wall or pipe, hold still for five seconds, save the spot. Move half a metre and do it again. A live leak index compares every spot with a quiet reference.
- Read the mapThe spots ranked, the loudest one named, and a PDF for the plumber with every spot and level — so the search starts where the sound is, not where the guess is.
What you get
- A comparative leak index for every spot you save, against a quiet reference wall.
- The map of your hunt: spots ranked, the loudest named — and an honest "no clear loudest yet" when two are too close to call.
- Each spot's five-second recording, replayable in the app, so the plumber can hear it too.
- A plumber-ready PDF: spots, levels, pipe material, the meter-test result.
- The honest answer, always free: when a leak is silent, under a slab or on the main line, the app sends you to a professional before it asks for anything.
Audio never leaves your phone
Every recording is analysed on the device, kept on the device, and yours to delete in one tap. No account, no sign-up, no cloud, no advertising. Crash reports can be switched off in Settings. Read the privacy policy.
What you need
- A phone with a microphone. Wired headphones are optional and let you hear the amplified hiss.
- A look at your water meter for the two-minute test — or skip it and listen anyway.
- Pro mode, optional: a cheap piezo contact disc on a headset adapter hears pipes better. The app shows you how.
It will not say "the leak is here". Sound through a wall tells you where it is loudest, not where the pipe is broken — and claiming otherwise would cost you a wall. The app points; a professional confirms. LeakSonar compares the sound of water between the spots you record. It does not see through walls, does not locate a pipe and does not replace professional leak detection — have the loudest spot confirmed before anyone opens a wall or a floor.
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