100% on-device analysis
The speech-pattern model runs inside your phone's memory — microphone input is evaluated locally and the alert appears instantly on screen.
We believe true security should never invade your personal privacy.
Guardian recognizes the manipulation script the moment it starts — and says so on screen.
«Your funds are at risk — transfer them to a safe account immediately»
Artificial urgency and a fake 'safe account' demand — a classic impersonation script flagged on-device.
«Mom, I'm in trouble — I urgently need money»
Emotional pressure plus financial demand matched against the known relative-in-trouble scenario.
«Stay on the line and read me the code from your SMS»
A request for SMS codes is a hard red flag — Guardian shows a persistent warning until the call ends.
Protection against manipulation — without invading your personal space.
The speech-pattern model runs inside your phone's memory — microphone input is evaluated locally and the alert appears instantly on screen.
Traditional caller-ID services upload your contacts and call data to a shared cloud database.
Guardian has no external servers — no sign-up, no contact upload, nothing leaves the phone.
Guardian never drops, blocks, or hijacks calls. It warns on screen — the conversation stays yours.
Protection stays on in roaming, in the metro, at the dacha — no internet needed.
Three steps — straight from Google Play.
A standard Google Play install — no sign-up, no card details, no extra settings.
Grant the call-related permission once — Guardian then protects every call automatically.
Free • No ads • No accounts • Works offline
Install from Google PlayHonest answers about what Guardian does — and never does.
Correct. The detection model runs entirely on your device — there are no Guardian servers to send anything to. The app holds no INTERNET permission, so audio, numbers, and call data physically cannot leave the phone.