Wrist Sniffer is an iOS app that turns your Apple Watch into an ultrasonic beacon detector, alerting you to hidden cross-device tracking signals in the 17–22 kHz range. It provides real-time detection, haptic alerts, and logs events for later analysis, helping privacy-conscious users monitor their environment for ultrasonic tracking attempts.
In the Lifestyle & Personal space, Wrist Sniffer‑App takes a focused approach. It focuses on detecting and alerting users to hidden ultrasonic beacons used for cross-device tracking in public spaces. Wrist Sniffer‑App is a consumer product aimed at privacy-conscious Apple Watch users. Pricing is paid, from $0.99. It runs on iOS.
Behind Wrist Sniffer‑App is Piotr Szmielew, based in the United States, and it first shipped in 2026. Among its 7 catalogued features are ultrasonic detection, haptic alerts, and spectrogram viewer.
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