Someone could be tracking you right now. SentryRF turns your Android phone into a professional counter-surveillance scanner. Sophisticated detection engines catch hidden trackers, rogue WiFi, fake cell towers, and spy devices. Follower detection spots any device shadowing you across locations. Physical sweep finds hidden cameras using EMF, ultrasonic, and infrared sensors. Sound Locator guides you straight to the device. Everything runs locally-no cloud, no accounts, no data leaves your phone