Compare software

CIRA Canadian Shield vs Acutis Firewall: catalog facts
CIRA Canadian Shield	Acutis Firewall
Free Free, provided by a national not-for-profit.	Free Free and open source, listed on F-Droid under the MIT licence.
Windows, macOS, Android, iOS, Browser extension	Android
Blocks phishing, malware, botnets and scam sites Optional adult content filtering for families	Filtering runs locally on the device Blocks adult, malware and dangerous domains
Built primarily for Canadian users No custom blocklists or per-domain control described	Small, young project Uses the Android VPN slot, so it cannot run alongside another VPN
Downloadable app, Hosted service, Browser extension	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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