DeviceSentinel

DeviceSentinel turns your smartphone into a simple, private anti-theft system that alerts you instantly when your phone is moved, unplugged, or taken out of range. It runs 100% offline—no account, no cloud, minimal permissions—and is built to be battery efficient. Key features include a loud Motion Alarm, Charger Alarm for unplug events, Proximity Guard to monitor distance, one-tap arm/disarm with customizable sensitivity, and selectable vibration/alert settings.

Designed for travelers, students, freelancers, and anyone who needs peace of mind in shared spaces, DeviceSentinel is perfect for cafés, libraries, airports, coworking spaces, or bedside protection. Adjust sensitivity for different surfaces, enable Proximity Guard in stationary settings, and grant the necessary permissions for full background operation. Download DeviceSentinel to secure your device quickly and privately—stay alert, stay protected.