Your MacBook is all you need. WiFi signals shift when someone enters a room — Pulse Guard detects it instantly. No cameras, no extra hardware.
Free to try. No account required. Ready in 30 seconds.
WiFi signals naturally fluctuate when someone enters a room. Pulse Guard learns your room's baseline and detects anomalies in real time.
Monitors RSSI values from your Mac's WiFi adapter to detect environmental changes caused by human presence.
Automatically detects and tracks every Bluetooth device nearby. Known vs. unknown — you always know who's around.
Just your MacBook. No cameras, no sensors, no hubs. Physics-based detection using signals already in your home.
Set your own sensitivity thresholds. Get notified only when it matters — with customizable alarm sounds and actions.
Lives in your menu bar — always monitoring, never in the way. One-click access to status, devices, and alerts.
All data stays on your device. No servers, no cloud, no tracking. Your security data never leaves your Mac.
Pulse Guard leverages a principle from wireless communications research: WiFi signals are affected by everything in their environment, including people. When a person enters a room, their body absorbs and reflects radio waves, creating measurable disturbances in the WiFi signal pattern that your MacBook's adapter can detect.
Pulse Guard monitors WiFi signal strength (RSSI) and nearby Bluetooth devices. Compare changes with a calibrated baseline and review alerts in the context of your room. Signal changes alone do not identify a person.
During initial setup, Pulse Guard learns the baseline signal pattern of your room when it is empty. Follow the calibration flow in the app before testing alerts. Once calibrated, the app continuously compares live signal data against this baseline, highlighting changes in the observed signal. The sensitivity threshold is fully adjustable — test different settings under normal conditions in your room.
Pulse Guard is ideal for home offices, apartments, and small spaces where camera surveillance feels invasive. Remote workers use it to know when someone enters their workspace. It provides additional information about your wireless environment, rather than a guaranteed intrusion alarm or a substitute for supervision. Privacy-conscious users appreciate that no visual data is ever captured or stored — just radio wave patterns that cannot identify individuals.
Monitor your home from your iPhone. Get push notifications, switch modes, and check status — wherever you are.
Monitor WiFi signal changes and nearby Bluetooth devices on your Mac with Pulse Guard. Calibrate your room and adjust alerts without adding a camera.
Check the App Store for supported devices, minimum OS version, availability in your region and current local pricing. Some features may require an in-app purchase.
View on Mac App StoreHow to Set Up WiFi Signal Monitoring on Your Mac — a practical guide to getting started.
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