Free vs paid antivirus: what to compare
Compare features, devices, and terms, not a price tag alone.
Start with what is included
Microsoft says the Windows Security app is built into Windows. Apple says macOS includes XProtect. Note what you already have before you compare anything else.
How CISA frames the choice
CISA says antivirus products typically perform the same types of functions, so the choice may come down to recommendations, particular features, availability, or price.
Read the feature list
Some paid plans list extra features, such as a password manager, a VPN, or identity alerts. Microsoft says Windows Security already includes Windows Firewall, so check whether a listed feature repeats one you have. Decide which features you would use before you pay for them.
Devices and systems
Check how many devices a plan covers and which systems: Windows, Mac, Android, or iPhone.
Free products
Read what a free product leaves out and whether it shows offers to upgrade. Download it only from the vendor's own site.
Price and renewal
See the current price at the vendor, and read the renewal price and auto-renew terms before you pay.
This is general information, not security or technical support advice.
Sources: CISA, Understanding Anti-Virus Software (archived); Microsoft Support, Stay protected with the Windows Security app; Apple Platform Security, Protecting against malware in macOS.
FAQ
Next: read a vendor page
Devices, renewal, and what is included.
