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Spectre vs Sparrow-wifi: catalog facts
Spectre	Sparrow-wifi
Free Free and open source under GPL-3.0.	Free Free and open source.
Android	Linux
Monitors Bluetooth, Wi-Fi, cellular and GNSS signals Reconnaissance tools in one app	Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support
Capabilities constrained by Android's security model Intended for authorized testing only	Linux only Installed from source with Python dependencies
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
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.