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Sparrow-wifi vs BLE Radar: catalog facts
Sparrow-wifi	BLE Radar
Free Free and open source.	Free Free and open source under the GPL-3.0.
Linux	Android
Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support	Finds and tracks nearby Bluetooth LE devices Custom filters with notifications when a match appears
Linux only Installed from source with Python dependencies	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 not stated	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 1, 2026	Official website Full listing and sources Checked October 2, 2026

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