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BLE Radar vs Sparrow-wifi: catalog facts
BLE Radar	Sparrow-wifi
Free Free and open source under the GPL-3.0.	Free Free and open source.
Android	Linux
Finds and tracks nearby Bluetooth LE devices Custom filters with notifications when a match appears	Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support
Intended for lawful research and personal security checks only; users are responsible for legal use Android only	Linux only Installed from source with Python dependencies
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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