The Sentry: Anti-Theft Alarm

Protect your privacy with The Sentry.

Have you ever wondered if someone enters your room while you're away? Or maybe you want an extra layer of security in your hotel room? The Sentry turns your smartphone into a high-tech, noise-sensitive security system.

How it works: The Sentry uses advanced audio polling to monitor ambient noise. Simply set your sensitivity threshold, tap "ARM," and you have 5 seconds to leave the space. If the app detects any sound (door opening, footsteps, whispering) that crosses your threshold, it triggers a powerful alarm or silently records the incident.

Key Features:
* High-Precision Detection: Adjustable sensitivity to distinguish between a pin drop and a door slam.
* Exit Delay: Professional countdown timer giving you time to exit the room.
* Event Logs: Every arming, disarming, and alert is recorded in a secure local database (Room DB).
* Spy Mode (Pro): Activate silent monitoring. No loud alarm—instead, the app records the intruder's audio for you to listen to later.
* Material 3 Design: A sleek, modern, and dark-themed interface designed for the latest Android versions.

Use Cases:
* Room Security: Keep curious roommates or siblings out of your private space.
* Travel Safety: Use it in hotels or Airbnb rentals as a portable door alarm.
* Baby Monitor: Get notified if your baby starts crying or wakes up.

Stay secure. Stay alert. Download The Sentry today.