An on-device phone guard. The user sets a 4-digit PIN inside the app, then arms a "guard" screen and leaves the phone on a table with the app open and the screen on (the guard only watches while the app is open and the screen is on; it pauses otherwise). If the phone is lifted, the screen is touched, a wrong app PIN is entered, or the charger is unplugged, the app takes one still photo with the front camera and writes a local evidence record (photo, date and time, trigger, how long the guard had been running, light level and a motion signature). In the dark the screen flashes white once. After a trigger the app locks to its PIN pad so the person who touched the phone cannot see the evidence. Deleting all evidence requires the PIN. Free to use; optional Pro is a Google Play subscription (weekly, monthly or yearly), and people who bought the earlier one-time Pro keep it. No accounts, no ads. The app does not watch the system lock screen; it only watches its own PIN. It uses the camera and vibration, and the internet only for Google Play purchases. It never asks for location, contacts, microphone or storage.