Motion Alert

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Content rating
Everyone
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Content rating
Everyone
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About this app

Turn your phone into a simple visual change alarm.

Place your phone on a stable surface, point the camera at the area you want to watch, and tap Start monitoring. After a five-second countdown, Motion Alert remembers the current view and watches for changes.

When a noticeable change is detected, sound and vibration alert you. The alarm continues even if the scene returns to normal, until you tap the screen or press the stop button.

SIMPLE CONTROLS
• Live camera preview.
• Pinch to zoom before monitoring starts.
• Adjustable detection sensitivity.
• Adjustable alarm volume.
• Tap the screen to stop monitoring.

PRIVATE BY DESIGN
Camera frames are processed live on your device. They are not recorded, saved, or uploaded.
No cloud processing. No app account. No ads or analytics.

FREE TO TRY
Use as many free monitoring sessions as you like. Each session lasts up to five minutes.

UNLOCK FOREVER
A one-time in-app purchase removes the monitoring time limit. No subscription or recurring payments. Restore your purchase when reinstalling the app or changing phones using the same Google Play account.

AVAILABLE IN 9 LANGUAGES
English, Spanish, French, German, Portuguese, Simplified Chinese, Arabic, Russian, and Polish.

KEEP IN MIND
Monitoring works while the app is open in the foreground. Leaving the app or rotating the screen stops the session. Keep your phone steady: camera movement and changes in lighting can also trigger the alarm.

Motion Alert detects visual changes; it does not identify people or objects. It is not a replacement for a professional security or safety system.

Use the camera only where you have permission and respect other people's privacy.
Detect visual changes with your camera. Local processing. No recording.
Updated on
Oct 1, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

First public release of Motion Alert.
On-device visual change detection with sound and vibration alerts.
No recording, no cloud, no account.