Visual change alarm for iPhone

Point the camera. Arm the view. Hear the alarm when it changes.

Motion Alert watches a fixed camera view on your iPhone and alerts you when the scene changes. It is built for simple, personal monitoring moments where you want motion to get your attention.

Motion Alert app icon

Simple by design

A focused alarm, not a surveillance system.

The app compares the current camera view against the view you armed. If the image changes enough, it sounds an alarm until you stop it.

Tap to arm

Set the phone down, press Start Monitoring, and get a clear countdown before detection begins.

Adjustable sensitivity

Choose how much visual change should trigger the alarm for your specific scene.

Persistent alert

When motion is detected, the alarm keeps sounding until you tap the screen to stop it.

Private on purpose

Camera frames stay on the device.

Motion Alert processes camera frames live on your iPhone. It does not record video, save photos, upload camera frames, create an account, or send your camera view to a server.

Trial sessions

The free version allows repeated trial monitoring sessions. A one-time purchase unlocks unlimited monitoring.

Personal utility

Use Motion Alert only where you have the right to use a camera and where people’s privacy is respected.