Explainer
What is WTMP? Who Touched My Phone, explained
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WTMP stands for "Who Touched My Phone". It describes a type of app that answers one narrow question — who has been using your phone while you were not looking — and it is also the name of ours.
Where the name comes from
The original WTMP app appeared on Android years ago and did one thing: when somebody entered the wrong PIN, it photographed them. The name stuck, and "a WTMP app" is now shorthand for that whole category — the way people say "a torch app" rather than naming a product.
Three related names come up constantly, so it is worth untangling them once:
- WTMP — Who Touched My Phone. Our App Store listing.
- WYTMP — Why You Touched My Phone. Our Google Play listing. Same app.
- DTMP — Don't Touch My Phone. Not a separate app at all; it is the alarm mode inside this one.
What it does, concretely
Someone picks up your phone and tries a passcode. The front camera fires silently — no flash, no shutter sound, nothing drawn on screen — and the photo is saved with the timestamp and the GPS coordinates. You get a push notification and an email with the picture attached.
That covers the snooper. The thief is a different case, because a thief often never touches the keypad at all — they just walk off with the phone. For that there is the DTMP alarm: a siren that goes off when the phone is moved, picked up, or unplugged from its charger, which is loud enough that most people put it straight back down.
Pro adds a silent 10-second video with sound rather than a single frame, alerts when the SIM is swapped or the phone is powered on, a fake home screen that lets a snooper think they are in while the app records them, and optional cloud backup. Without it, captures stay on the device.
Where the photos go
By default, nowhere — they are stored privately on your own phone. They are emailed to you as part of the alert, and on Pro you can switch on cloud backup so captures survive the phone being wiped or stolen. That is opt-in, not the default.
What it is not
It is not a way to watch somebody else. It is built to protect a phone you own, and installing it on another adult's device without their knowledge is illegal in many places. It also will not tell you about something that already happened — it only sees what occurs after it is installed and running.
Frequently Asked Questions
What does WTMP stand for?
WTMP stands for “Who Touched My Phone”. It is used both as a general name for this category of app — one that photographs whoever tries to unlock your phone — and as the name of our own app on the App Store and Google Play.
¿Qué es WTMP?
WTMP significa “Who Touched My Phone” (“quién tocó mi teléfono”). Es una aplicación gratuita para iPhone y Android que toma una foto silenciosa con la cámara frontal cuando alguien intenta desbloquear tu teléfono, y guarda la hora y la ubicación GPS. La versión Pro añade vídeo del intruso, alertas de cambio de SIM y una pantalla de inicio falsa.
What does the WTMP app actually do?
When someone tries to unlock your phone, it takes a silent front-camera photo — no flash, no shutter sound, nothing on screen — and saves it with the time and GPS location, then sends you a push notification and an email. It also sounds the DTMP alarm if the phone is moved, picked up or unplugged from its charger.
What is the difference between WTMP, WYTMP and DTMP?
WTMP is “Who Touched My Phone” and WYTMP is “Why You Touched My Phone” — two names for the same app, which is published as WYTMP on Google Play and as WTMP on the App Store. DTMP is “Don’t Touch My Phone” and is not a separate app: it is the alarm mode inside it, the one that sounds a siren when the phone is moved.
Is WTMP free?
Yes, free to download on both platforms, including the intruder selfie, GPS logging and the DTMP alarm. Pro adds the 10-second intruder video, SIM-change and power-on alerts, the fake home screen and optional cloud backup, at $0.99 per week, $6.99 per month or $19.99 per year on iPhone.
Is WTMP legal to use?
On a phone you own, yes — photographing someone who is trying to get into it without permission is what the app is built for. Installing it on somebody else’s phone to monitor them is a different matter and is illegal in many countries. Rules vary, so check your local law if you are unsure.
Catch them in the act — free
Silent intruder selfie, GPS location, and instant alerts. Set up in under a minute.