EarWitness

If you wake up wondering whether that sound was real,
your phone will know.

It's 2:47 AM. You jolt awake. Was that a bang — a gunshot, a door, breaking glass? Or did your brain invent it? Until now you had two options: lie there anxious, or get up and search the house. EarWitness gives you a third: grab your phone, glance at the waveform of the last few minutes, and see the answer. A flat line means it was a dream. Go back to sleep.

See it in action

EarWitness home screen with one large START LISTENING button

One tap at bedtime.
No account, no setup.

EarWitness listening through the night showing a live waveform and All quiet so far

Listens all night —
even with the screen off.

EarWitness flagging a loud sound with an amber spike in the waveform

Loud sounds flagged the
moment they happen.

EarWitness playback screen with a jump to loud sound button

Replay the last few minutes —
jump straight to the noise.

EarWitness morning review showing the whole night's waveform and one detected loud sound

Your whole night at a glance —
flat means quiet.

← swipe / scroll →

How it works

One tap at bedtime.

Tap START and put the phone on your nightstand. EarWitness listens all night, even with the screen off.

Loud sounds get flagged automatically.

A bang out of the silence is timestamped the moment it happens. Smart detection compares every sound to your room's background, so a fan or quiet conversation won't cause false alarms.

Wake up scared? Answers in seconds.

One button replays the last five minutes. See the waveform, jump straight to the loud moment, and hear exactly what your room heard.

Morning report.

Your whole night in one waveform — flat means quiet. Every flagged sound listed with its exact time, one tap to listen.

Your audio never leaves your phone.

No cloud. No account. No uploads — ever. Recordings are stored only on your device and delete themselves automatically after 3 days. An app that listens while you sleep should have nothing to hide, so this one has nothing to take. Read the full privacy policy.

Be one of the first to try it

EarWitness is in beta ahead of its Google Play launch. Beta testers get the app free, forever — all we ask is that you keep it installed for a couple of weeks and tell us what you think. Android only for now; iPhone is coming.

Email to join the beta

Questions people ask

Is it really private?

Yes — by architecture, not by promise. The app has no cloud, no account system, and no analytics. Audio is recorded to your phone's private storage, never transmitted anywhere, and auto-deletes after 3 days. If we wanted your data, we'd have nowhere to put it.

Will it drain my battery?

Overnight listening uses battery like any recording app, so we recommend charging while it runs — which most people do overnight anyway. With the phone plugged in, battery is a non-issue.

What phones does it work on?

Android phones (Android 10 or newer recommended). An iPhone version is planned after the Android launch.

What will it cost?

Free to try for 5 real nights, then a small one-time purchase unlocks it forever. No subscription. Beta testers get it free for good.

Why would I need this?

Waking to a loud bang that may not have happened is surprisingly common — sleep medicine even has a name for one form of it (exploding head syndrome — harmless, but frightening). Light sleepers, people who live alone, and anyone whose brain runs a night-watch shift: this is for you.