Apps by Jiulong Zhao
Motion Detect app icon

Business

Motion Detect

Jiulong Zhao

$9.99 In-app purchases
Open on Apple

About this app

Benefit from the processing power of the new Mac, accurate frame by frame comparison of your live video becomes more popular. Motion detection is no longer focused on security monitoring but scientific research and hobby projects... Monitor your work area with your iSight or connected webcam and capture images of any anomalies. In this day and age, most are only concerned with spyware and malware from the Internet, but few seem to be interested in a more old-fashioned sort of hacking: what if someone just walked up to your computer and did his dirty work the analog way? Maybe he's not even hacking per se, but simply snooping around. But it doesn't matter, you don't want people to invade your privacy, much less browse through your files. And if someone does, you want to know who! MotionDetect does exactly that. If your environment changes - meaning that someone in front of the webcam, your camera triggers and takes a capture so you know exactly who or what has visited your area. Working together with your password enabled screensaver, MotionDetect keeps your computer safe! features: - the amount of motion is displayed in real-time. - sensitivity of the capture trigger can be adjusted in real-time. - interface can be hidden. - can trigger a screensaver while the interface is hidden. - iSight camera and all webcams & DV devices supported by Mac are supported. v1.26 -> v2.00 - Any Mac (Apple Silicon, Intel) version for macOS Big Sur - the whole app is fully rewritten - frame by frame comparison core changed - selected device will be reloaded automatically - sound effect and skip frames option added - option for latest or powerful Mac added - display last saved image added - new startup tip added - 'auto-open at login' tip added - app version display added - app icon modified - support menu updated - all deprecated functions rewritten v2.00 -> v2.10 - feature added: wifi connected iPhone can be selected as video device - all deprecated code fully rewritten - interface and menu updated - bug fixed: button state will be auto refreshed - supports from macOS 11.0 to the latest macOS 15.5

Latest release

What’s New

Version v2.10 Jun 4, 2025

v2.00 -> v2.10 - feature added: wifi connected iPhone can be selected as video device - all deprecated code fully rewritten - interface and menu updated - bug fixed: button state will be auto refreshed - supports from macOS 11.0 to the latest macOS 15.5

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 7, 2026 · 0 ratings Aug 7, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $9.99
Historical low USD 9.99
Paid → free
Price history
Current $9.99
$9.99 $5.00 Free Aug 7, 2026 · $9.99 Aug 7, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 7, 2026 · 10:49 PM $9.99

Screenshots

Motion Detect iPhone screenshotMotion Detect iPhone screenshotMotion Detect iPhone screenshot