antivirus–vergleich.ch
2026

Microsoft Defender vs Avast

Microsoft Defender and Avast compared side by side: protection, performance, pricing, and features. Which antivirus suits you better?

Microsoft
Microsoft Defender
8.7
/ 10

Microsoft Defender comes pre-installed on every Windows PC and provides solid baseline protection against malware, phishing, and ransomware. In independent tests, Defender now performs well and is often sufficient for users with cautious browsing habits. However, anyone who needs VPN, password manager, extended web protection, or parental controls should consider a paid suite. As a free reference point, Defender is the most important comparison benchmark.

1st Year PriceCHF 0.00 RenewalCHF 0.00 PlatformsWindows
Protection 8.7
Performance 9.0
Best for 9.3
First-year price 10.0
Key features 7.2
Support 7.8
Avast
Avast
8.7
/ 10

Avast Premium Security is one of the most recognisable antivirus brands and offers solid protection for up to 10 devices. The suite includes web protection, VPN, and anti-tracking features. Platform coverage is broad – from Windows and Mac to mobile devices. Avast has faced past criticism over data privacy practices, which have since been addressed. Pricing is fair but not always the cheapest.

1st Year PriceCHF 37.90 RenewalCHF 74.90 PlatformsWindows, Mac, Android, iPhone / iPad
Protection 9.1
Performance 8.7
Best for 8.9
First-year price 8.5
Key features 8.8
Support 8.1
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Our Verdict

Microsoft Defender and Avast are evenly matched.

Both products are evenly matched – the decision depends on your personal requirements.

Our verdict

Microsoft Defender is a respectable free baseline for Windows in 2026. Avast (score: 8.7 out of 10) adds web/phishing filter, ransomware module, VPN and password manager – features Defender still does not provide.

On price, Microsoft Defender currently sits at CHF 0 in year one, Avast at CHF 38. Watch the renewal price closely: both are transparently listed in the table above and matter more long-term than the introductory price.

Strength profiles: Microsoft Defender scores highest on price-performance, Avast on protection. If you care most about one of those dimensions, the choice is clear. For all-round needs, either product is a safe pick.

Feature-by-feature comparison

Criterion Microsoft Defender Avast
Real-time protection Yes Yes
Built-in VPN No Yes
Password manager No No
Anti-tracking / anti-phishing No Yes
Parental controls No No
Identity protection No No
Low system impact Yes No
Platforms Windows Windows, Mac, Android, iPhone / iPad
Number of devices (standard licence) 1 10
System impact in daily use Very low Moderate

More comparisons with Microsoft Defender

More comparisons with Avast

Frequently asked questions about Microsoft Defender vs Avast

Is Microsoft Defender enough or do I need :paid?
Defender is solid baseline protection in 2026 and enough for cautious users on up-to-date Windows with 2FA. :paid adds VPN, password manager, web/phishing filter, ransomware module and anti-tracking – useful for banking, crypto, heavy web research or a family setup.
How much does :paid cost per month vs Defender?
Defender is free; :paid costs roughly CHF 3–8/month in year one (converted) and rises on renewal. The exact price is in the table above.
Does :paid slow my PC more than Defender?
In AV-TEST performance tests most commercial suites match or slightly exceed Defender. In daily use on modern hardware the difference is barely noticeable.
Can I run :paid and Defender at the same time?
No – as soon as :paid is installed, Defender disables itself automatically. Two active real-time scanners cause conflicts and should be avoided.