Can't remember where you left it?

Find your phone by clapping.

Or whistle. That works too.

ClapWhistle listens on your nearby Android phone. When it hears the sound you picked, your phone rings, vibrates, and flashes so you can follow it.

  • No sign-in
  • No audio recordings
  • Android 6.0+
Listening for two claps
ClapWhistle listening screen with clap and whistle detection turned on
Phone foundRing + vibrate + flash

01 / How to find your phone

Set it once. Make some noise when you need it.

  1. 1

    Choose claps, a whistle, or both.

    Two claps are a good place to start. You can change the number of claps and test both sounds before putting the phone down.

  2. 2

    Tap Start listening.

    Android keeps a notification on screen while the microphone is in use, and you can stop listening from there at any time.

  3. 3

    Clap twice or hold one steady whistle.

    Your phone can ring, vibrate, and flash. Follow the alert, then stop it from the phone or its notification.

Read the full setup guide
ClapWhistle setup screen for choosing room noise and clap sensitivity
Pick a room setting, then try the sound test.

02 / Make it work in your room

Every room sounds different.

A quiet bedroom is not a busy kitchen. Start with the Normal room setting, try a few claps or whistles, then adjust only if the phone misses you or goes off by mistake.

Claps are missed?
Move the phone out of a thick bag or drawer, then raise sensitivity one step.
TV or music sets it off?
Use two or three claps, lower sensitivity, or add a longer pause between alerts.
Hands full?
Choose whistle mode and hold one clear, steady note.

This is for a phone that is close enough to hear you. It is not GPS tracking, and closed doors, bags, and room noise can shorten the range.

03 / Your microphone

It listens for a sound. It does not keep the sound.

While listening is on, ClapWhistle checks small pieces of sound for a sharp clap or one steady whistle. Each piece is thrown away as soon as it has been checked.

Read the privacy policy in plain language

No recordings

No audio uploads

No account needed

Sound detection works without internet

The app may use the internet for ads and basic app reports, but microphone audio is not part of them.
ClapWhistle progress screen showing finder counts stored on the phone

04 / What Android allows

What to expect when the screen is off.

Visible while it listens

Android shows the microphone.

You will see an ongoing notification and Android's microphone indicator while listening is on.

After a restart

Tap once to start again.

Modern Android will not quietly restart the microphone. ClapWhistle shows a notice you can tap.

If listening stops

Check the phone's battery settings.

Some Samsung, Xiaomi, Oppo, Vivo, and other phones pause apps more aggressively than others.

Google Play

The Android app is not public yet.

The latest release is still in Google Play review, so there is no public download page yet. This site will link to it as soon as it is live.

Somewhere under the couch, your phone is getting nervous.

Clap. Whistle. Follow the noise.

Find it with clapsFind it with a whistle