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Avast One
Avast One · Prague, Czech Republic · founded 1988
What it is
Avast One is a security suite for Windows, macOS, Android, and iOS, with a protection scope described as complete security. Listed features include ransomware protection, junk cleanup, a startup manager, scheduled maintenance, and built-in ad blocking. Cross-device sync is supported, as are Chrome Store extensions; the browser engine is Chromium. Windows support covers versions 10 and 11, and the device limit is 30. Avast One has a free plan. Basic is described as including essential antivirus and security features, but no price is listed for that plan. The Silver Device Protection module costs $2.99 per month and adds device-protection features. Gold costs $6.99 per month and includes expanded security, privacy, and performance features. Platinum costs $9.99 per month and is described as the broadest listed protection tier. Its maker is listed as Avast One, founded in 1988 and headquartered in Prague, Czech Republic.
For and against
For
- Free plan available.
- Ransomware protection is listed.
- Supports Windows, macOS, Android, and iOS.
- Cross-device sync is supported.
Against
- Device limit is 30.
- Windows support is listed for versions 10 and 11.
- Paid tiers cost $2.99, $6.99, or $9.99 per month.
The verdict
Avast One offers a free plan and paid tiers with additional device, security, privacy, and performance features. Compare the listed tier descriptions and device limit when deciding whether it fits your needs.
Who it suits
It suits people seeking security software across desktop and mobile platforms, with listed maintenance and ad-blocking features. A device limit of 30 may matter to buyers managing more devices.
Plans and prices
Basic
Essential antivirus and security features
Read 20 Sep 2026 · onlinescan.avast.com
Silver Device Protection module
Additional device-protection features
Read 20 Sep 2026 · onlinescan.avast.com
Gold
Expanded security, privacy, and performance features
Read 20 Sep 2026 · onlinescan.avast.com
Platinum
Broadest listed Avast One protection tier
Read 20 Sep 2026 · onlinescan.avast.com
Free Antivirus
Core antivirus and scam protection · free download
Read 15 Oct 2026 · avast.com
Premium Security
1 Mac + 1 mobile device
Read 15 Oct 2026 · avast.com
Ultimate
10 devices · Windows, Mac, iPhone/iPad, Android
Read 15 Oct 2026 · avast.com
On the record
- AntiTrack integration
- Windows version 26.9 integrated AntiTrack dashboards, extension management, tracker statistics and fingerprinting metrics.community.avast.com · read 15 Oct 2026
- Antivirus scanning
- The product scans files when they are opened or added and isolates potentially harmful files for analysis.avast.com · read 15 Oct 2026
- Avast Assistant
- Avast Assistant uses AI to analyze messages, emails and links for scam indicators and answer online-safety questions.support.avast.com · read 15 Oct 2026
- Browser extension
- Avast Online Security & Privacy blocks phishing sites, shows community site reputations and blocks tracking cookies.chromewebstore.google.com · read 15 Oct 2026
- Cleanup
- Cleanup removes browser history, temporary files, cookies and dead shortcuts to recover space.avast.com · read 15 Oct 2026
- Company history
- Avast says Pavel Baudiš and Eduard Kučera founded Alwil in Prague in 1988, renamed it Avast Software in 2010 and joined Gen in 2022.avast.com · read 15 Oct 2026
- Company legal entity
- The privacy policy identifies Avast Software s.r.o. as the data controller and registered entity.avast.cz · read 15 Oct 2026
- Company ownership and headquarters
- Avast is part of Gen Digital, whose merger filing says the combined company is dual headquartered in Tempe, Arizona and Prague.sec.gov · read 15 Oct 2026
- Company size
- LinkedIn lists Avast as a public company with 1,001–5,000 employees and headquarters in Prague.linkedin.com · read 15 Oct 2026
- Device limit
- 30onlinescan.avast.com · read 20 Sep 2026
- Documentation depth
- The public support center contains product FAQs, installation guidance, feature explanations and system-requirement articles.support.avast.com · read 15 Oct 2026
- Email protection
- Premium Email Guard monitors email for suspicious content and attachments.avast.com · read 15 Oct 2026
- Integrations
- The AntiTrack extension supports Google Chrome, Microsoft Edge and Mozilla Firefox.community.avast.com · read 15 Oct 2026
- Licence
- Avast grants a non-exclusive subscription licence; free consumer solutions are licensed for personal, non-commercial household use.avast.com · read 15 Oct 2026
- Limit: AI assistant
- Macworld found the chat-based AI Assistant limited to basic questions and noted occasional malware-installer detection gaps.macworld.com · read 15 Oct 2026
- Limit: device cap and backup
- Tom’s Guide reported a maximum of 10 protected devices and no cloud-backup feature.tomsguide.com · read 15 Oct 2026
- Limit: paid extras
- TechRadar noted that scam SMS and call blocking, deepfake detection and fake-shop identification require paid tiers.techradar.com · read 15 Oct 2026
- Limit: subscription complaints
- Trustpilot review summaries repeatedly mention unwanted renewals, unexpected charges, cancellation difficulty and promotional pop-ups.trustpilot.com · read 15 Oct 2026
