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GlassWire vs NetGuard: catalog facts
GlassWire	NetGuard
Freemium A free version is available. Longer history and extra features require a paid licence.	Freemium Free and open source. Some features are unlocked by an in-app purchase.
Windows, Android	Android
Visual history makes it obvious which application started talking and when Alerts on first connections and on changes to system network settings	Per-app blocking with separate Wi-Fi and mobile rules, without root Live traffic log showing exactly what each app contacts
Longer history retention and several features need a paid licence Windows and Android only, closed source	Occupies the VPN slot, so it cannot run alongside a real VPN Some features are unlocked by an in-app purchase
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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