Signal Watch Guard
Spot nearby Bluetooth devices
About
This app acts as a private radar for nearby Bluetooth Low Energy devices. It alerts you when specific devices you're watching for appear, logs all detected devices, and allows for detailed inspection of their broadcast data. All processing happens on your device for maximum privacy.
What's New in Signal Watch Guard
1.4.3
September 19, 2026
Updated the App name
Developer apps
FAQ
What devices can Signal Watch Guard detect?
Signal Watch Guard can detect any device that broadcasts Bluetooth Low Energy advertisements. This includes popular smart glasses, cameras, and body-worn devices, as well as other BLE-enabled gadgets. It cannot detect devices that do not broadcast BLE signals.
How does Signal Watch Guard ensure privacy?
Signal Watch Guard is designed for privacy. All scanning and matching occur directly on your device, with no analytics, accounts, or data collection. Nothing is ever uploaded or shared, ensuring your Bluetooth activity remains confidential.
Can I customize the alerts in Signal Watch Guard?
Yes, you can customize alerts by adding specific devices to your watchlist. You can specify details like maker ID, name, service ID, or manufacturer data for precise matching. You can also edit, disable, or delete preloaded device signatures.
How accurate is the distance estimation in Signal Watch Guard?
The distance estimation in Signal Watch Guard is approximate. Factors like walls, bodies, and device orientation can affect signal strength, leading to variations in the estimated distance. Signal strength is also shown in dBm for a more technical reading.
Does Signal Watch Guard have ads?
No, Signal Watch Guard does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted user experience.
What platforms is Signal Watch Guard available on?
Signal Watch Guard is available for iPhone and iPad devices. It requires iOS 13.0 or later.
How often is Signal Watch Guard updated?
Signal Watch Guard was last updated on September 19, 2026, with version 1.4.3. This indicates a relatively recent update, suggesting ongoing support and development.
Can I export my detected device logs from Signal Watch Guard?
Yes, you can export your entire sightings log as a CSV file. This allows you to review, analyze, or back up the data of detected devices and their signal information outside of the application.
