Best Motion Detector Alarm Apps

247+ iOS apps curated and reviewed

3.6 avg rating
16 free apps
Updated October 2026

With an average user rating of 3.6★, the motion detector alarm category is one of the App Store's strongest. Browse all 247+ apps we track, sorted so the most loved ones surface first.

Compare top Motion Detector Alarm Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Alarmist LiDAR Motion DetectorAlarmist LiDAR Motion DetectorFree5.0★ (3)YesYesOct 2026
2If It Moves - Motion DetectorIf It Moves - Motion DetectorFree—NoNoMay 2026
3Vigil: Motion Detector AlarmVigil: Motion Detector AlarmFree1.0★ (1)NoYesOct 2026
4Alarm FreeAlarm FreeFree3.3★ (13)YesNoOct 2026
5Motion AlertMotion AlertFree—NoYesOct 2026
6WatchSpot: Motion Alarm CameraWatchSpot: Motion Alarm CameraFree5.0★ (1)NoYesNov 2026
7Motion Detector CameraMotion Detector Camera$3.991.8★ (5)NoNoOct 2026
8Ring - Always HomeRing - Always HomeFree4.7★ (1.9M)NoNoNov 2026

Top Picks for Motion Detector Alarm

Alarmist LiDAR Motion Detector#1

Alarmist LiDAR Motion Detector by Folding Sky Co

Night Vision Alarm & Camera
Editor's Choice
🔧 Utilities
5.0(3 ratings)
FreeAdsIn-App Purchases
Alarmist LiDAR Motion Detector screenshot 1
Alarmist LiDAR Motion Detector screenshot 2
Alarmist LiDAR Motion Detector screenshot 3
Alarmist LiDAR Motion Detector screenshot 4

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.

Vigil: Motion Detector Alarm#3

Vigil: Motion Detector Alarm by Incrementum Tech

Security cam & intruder alert
Worth Considering
🔧 Utilities
1.0(1 ratings)
FreeIn-App Purchases
Vigil: Motion Detector Alarm screenshot 1
Vigil: Motion Detector Alarm screenshot 2
Vigil: Motion Detector Alarm screenshot 3
Vigil: Motion Detector Alarm screenshot 4
Vigil: Motion Detector Alarm screenshot 5
Vigil: Motion Detector Alarm screenshot 6

This app transforms your phone into a motion-activated security alarm. It detects people and moving vehicles, sounding a loud alert. Optional sound detection can also trigger the alarm for footsteps or approaching cars.

More Motion Detector Alarm apps to explore

FAQ about Motion Detector Alarm

What are the best motion detector alarm apps for iPhone?
Alarmist LiDAR Motion Detector tops our motion detector alarm apps ranking as of October 2026, with a 5.0-star average from 3 App Store ratings, and it's free to download.
Yes — 16 of the top motion detector alarm apps we rank are free to download, including Alarmist LiDAR Motion Detector and If It Moves - Motion Detector.
Alarmist LiDAR Motion Detector shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 247+ motion detector alarm apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.