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Avira Free Security vs Kaspersky Premium: catalog facts
Avira Free Security	Kaspersky Premium
Freemium Free tier with paid Internet Security and Prime plans.	Paid Paid subscription licence, with trial versions available.
Windows, macOS, Android, iOS	Windows, macOS, Browser extension
Real-time antivirus at no cost Extra tools like software updater and browser safety	Top tier of an established consumer security range Trial available before purchase
Closed source Upsells paid plans and premium tools	Paid subscription that must be renewed Closed source
Downloadable app	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License: Proprietary
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 September 24, 2026

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