Best Antivirus Software · head-to-head
Bitdefender vs Avast
A sourced, side-by-side comparison for antivirus software. Avast has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
At a glance
- Price: Bitdefender $2.08/mo vs Avast $0/mo — Avast is cheaper to start.
- Free tier: Bitdefender Yes; Avast Yes.
- HIPAA: Bitdefender —; Avast —.
Side by side
| Bitdefender | Avast | |
|---|---|---|
| Entry price | $2.08/mo (Bitdefender Antivirus Plus (1 device)) | $0/mo (Avast Free Antivirus) |
| Free tier | Yes | Yes |
| HIPAA (BAA) | — | — |
| SOC 2 | — | — |
| GDPR | — | Yes |
| Best for | Windows-primary households wanting strong detection with low system overhead | Budget users wanting a full-featured forever-free antivirus |
Sources — Bitdefender: bitdefender.com (verified 2026-06-14). Avast: avast.com (verified 2026-06-14).
Key features
Bitdefender: Behavior-based threat detection (not just signature scanning); Auto Sandbox isolates suspicious files before execution; Multi-layer ransomware protection with file recovery; Bitdefender Central cloud console for remote device management; Minimal performance impact — consistently top-ranked in AV-TEST performance tests
Avast: AI-powered Avast Assistant for scam detection in messages; Webcam Shield blocks unauthorized camera access (paid); Ransomware Shield protects files from unauthorized encryption; Network Inspector detects Wi-Fi intruders and router vulnerabilities; Avast is part of Gen Digital (same parent as Norton/AVG) — shared threat intelligence