Compare software

Avast Free Antivirus vs Bitdefender Total Security: catalog facts
Avast Free Antivirus	Bitdefender Total Security
Freemium The antivirus is free; Avast sells a VPN and other paid products.	Paid Paid subscription, with renewal discounts for existing customers.
Windows, macOS, Android	Windows, macOS, Android, iOS
Free antivirus from a large vendor Available for Windows, macOS and Android	Malware scanning, ransomware protection and firewall in one suite Covers multiple devices in a household
Closed source Promotes paid products from within the free offer	Paid subscription Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 23, 2026	Official website Full listing and sources Checked September 23, 2026

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