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Spectre vs BLE Radar: catalog facts
Spectre	BLE Radar
Free Free and open source under GPL-3.0.	Free Free and open source under the GPL-3.0.
Android	Android
Monitors Bluetooth, Wi-Fi, cellular and GNSS signals Reconnaissance tools in one app	Finds and tracks nearby Bluetooth LE devices Custom filters with notifications when a match appears
Capabilities constrained by Android's security model Intended for authorized testing only	Intended for lawful research and personal security checks only; users are responsible for legal use Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.