This is Magic
Wow this thing really works. If you leave it charging overnight you can point it at the door and it gives me peace of mind esp at Airbnbs
Response from developer
Thank you so much for your kind words!
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About
Transform your compatible iPhone or iPad into a motion-activated security camera. It uses LiDAR to detect movement, capture photos, and log events, with optional iCloud syncing for cross-device access. Choose between audible alarms or silent monitoring.
✓Motion detection with LiDAR
✓Photo capture on motion
✓Detection history log
✓iCloud sync across devices
✓Silent monitoring mode
✓Infrared depth sensing for darkness
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+1
What's New in Alarmist LiDAR Motion Detector
1.8.0
July 29, 2026
perf(detection): optimize motion analysis and frame processing perf(detection): optimize sparse motion-mask erosion
1
In-App Purchases
$19.99
Alarmist Pro
Unlock all features forever. One-time purchase.
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FAQ
What devices is Alarmist compatible with?
Alarmist requires a LiDAR sensor, making it compatible with iPhone 12 Pro or newer, and iPad Pro (2020 or newer). The app must be a Pro version.
Does Alarmist work in complete darkness?
Yes, Alarmist uses infrared depth sensing via LiDAR to detect movement in complete darkness without needing visible light or a camera image.
How does Alarmist handle storage?
Detection events are logged with timestamps and photos. You can configure auto-retention for 30, 60, or 90 days to manage storage space.
Can I monitor my home remotely with Alarmist?
Yes, Alarmist supports iCloud sync, allowing you to review your detection history with photos on any of your compatible devices.
Does Alarmist have ads?
Yes, Alarmist contains advertisements. The app is free to download and use, with optional in-app purchases.
How often is Alarmist updated?
The latest version, 1.7.0, was released on March 30, 2026. Updates are provided by the solo developer to improve functionality and reliability.
What are the limitations of Alarmist?
Alarmist is a convenience tool, not a guaranteed security system. The device must remain plugged in, the app in the foreground with the screen on, and it cannot guarantee detection of all events.
Is Alarmist suitable for children?
Alarmist has an age rating of 17+, indicating it is intended for mature users due to its security monitoring nature and potential for complex settings.