This utility app turns your mobile device into a motion detector using its camera. Receive notifications when any movement is detected, ensuring you're alerted to changes.



249+ iOS apps curated and reviewed
Motion Sensor NLK is the household name in motion sensor nlk, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 2.1★ (11) | No | No | Jul 2026 | |
| 2 | Free | 4.8★ (111) | No | Yes | Aug 2026 | |
| 3 | $4.99 | 4.2★ (257) | No | No | Aug 2026 | |
| 4 | Free | 5.0★ (3) | No | No | Aug 2026 | |
| 5 | Free | 5.0★ (404) | No | No | Aug 2026 | |
| 6 | Free | 2.9★ (7) | No | No | Aug 2026 | |
| 7 | Free | 3.0★ (2) | No | No | Jul 2026 | |
| 8 | Free | — | No | No | May 2026 |



This utility app turns your mobile device into a motion detector using its camera. Receive notifications when any movement is detected, ensuring you're alerted to changes.






This app collects and displays data from various device sensors, including motion, GPS, and audio. It offers background recording, interactive plots, and multiple export formats. Advanced features allow for data streaming, systematic data collection from other users, and creating shareable data-driven dashboards.



This application acts as a motion detector, automatically recording video when movement is detected. It offers various features for surveillance, security, or capturing pet activities. Videos can be saved to cloud storage or viewed within the app.


This app helps you detect discreet wearable cameras by identifying the wireless signals they broadcast. It alerts you when known devices are nearby, offering a modern radar visualization and clear signal indicators for proximity estimation. Designed with privacy in mind, your data remains on your device.


This app reveals the device details advertisers use for fingerprinting, showing you what information your iPhone shares. Explore passive, permission-based, and advanced data points to understand your digital footprint. All data stays on your device, with no uploads or analytics.


This app functions as a surveillance system, allowing users to monitor their devices. It provides remote access and control for security purposes. The application is designed for users who need to keep an eye on their connected devices.


This app transforms your iPhone into a professional motion data logger. Record accelerometer, gyroscope, and magnetometer data simultaneously, visualize it with interactive charts, and export it in CSV or JSON format for detailed analysis. Organize and compare recordings to gain insights into motion patterns.




This app allows for the visual configuration of occupancy sensors and photocontrols using flash programming technology. Users can easily adjust settings like time delay, trim values, and photocontrol options. It also offers Bluetooth connectivity for select sensors and includes security features.




This utility app records gyroscope, accelerometer, and audio data from your device. Export your recorded data as CSV or M4A files for further processing, particularly for machine learning applications. Your data remains private and is only accessible on your device.


Manage your security cameras and smart home devices remotely from anywhere in the world. Receive instant motion detection alerts and take action to protect your home, business, and loved ones. View live streams, playback recordings, and communicate using two-way audio.


Explore the unknown with this paranormal investigation toolkit. Features include a spirit box for asking questions, an EMF scanner to detect magnetic field changes, a radar to locate activity, and an EVP recorder for audio capture. Save your sessions for later review.


This paranormal detection tool uses your device's motion sensors to track subtle movements and energy spikes. It features a retro CRT design and real-time graph feedback, offering an authentic ghost hunting equipment experience for entertainment purposes.


Log detailed motion and GPS data from your Apple Watch. Export sensor readings like acceleration, attitude, and location as a CSV file for analysis. This app is exclusively designed for Apple Watch.








This app simulates ghost detection using a radar and camera scanner. It allows users to create spooky scenarios with ghost sounds and capture spirits in a virtual trap. It's designed for entertainment and pranks.


This app allows authorized users to record synchronized egocentric video and inertial measurement data. Capture high-resolution video and high-frequency IMU data for AI model development. Manage and securely upload your recordings to the platform.