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Cybersecurity · head to head

Avast One vs uBlock Origin

Avast One logo

Avast One

Cybersecurity

All-in-one protection for your digital life

From
Free
Rated
-
Full reviewWebsite
uBlock Origin logo

uBlock Origin

Browser Extensions

Free, open-source ad content blocker

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Avast One ransomware and Wi-Fi vulnerability protection only on paid plans; uBlock Origin cNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium
  • They diverge on capability: Avast One covers Antivirus, uBlock Origin covers Ad blocking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Avast One and uBlock Origin actually diverge.

Attributes where Avast One and uBlock Origin differ
AttributeAvast OneuBlock Origin
Pricing modelUnknownfree
PlatformsWindows, macOS, iOS, AndroidChrome, Firefox, Edge, Opera
CategoryCybersecurityBrowser Extensions
Founded19882014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Avast One

  • Antivirus
  • Firewall
  • VPN
  • Data breach monitoring
  • Email Guardian
  • Webcam Shield
  • Ransomware Shield
  • Performance optimization

Only in uBlock Origin

  • Ad blocking
  • Tracker blocking
  • Malware domain blocking
  • Custom filter lists
  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

The jobs each tool is most often brought in to do.

Avast One

  • Antivirusnot uBlock Origin
  • Internet Securitynot uBlock Origin
  • Privacy Toolsnot uBlock Origin

uBlock Origin

  • Ad and tracker blocking in web browsersnot Avast One
  • Privacy protection while browsing the webnot Avast One
  • Reducing bandwidth usage by blocking adsnot Avast One
  • Users seeking open-source browser extensionsnot Avast One

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Avast One

  • Ransomware and Wi-Fi vulnerability protection only on paid plans
  • Free plan VPN is limited, no data breakthrough monitoring
  • Rebuilt app in May 2026 may have stability issues

uBlock Origin

  • CNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium
  • HTML filtering of response bodies requires the webRequest.filterResponseData API, which is only available in Firefox
  • On Chromium-based browsers uBO is not reliably ready at browser launch, so tracker and advertisement payloads can reach already-open tabs before filtering starts
  • Pre-fetch blocking is not reliable on Chromium-based browsers because they give websites precedence over user settings
  • The Chromium build does not use the WebAssembly filtering code paths, because the extra manifest permission would create friction publishing to the Chrome Web Store
  • LZ4 storage compression is Firefox only, and on Chromium in incognito mode IndexedDB resets, so uBO launches with out-of-date filter lists

Pricing, plan by plan

Avast One

Free
  • FreeFree
    • Antivirus
    • Limited VPN
    • Privacy tools
  • Silver$2.99/month
    • Enhanced antivirus
    • VPN
    • Device cleanup
  • Premium$4.19/month
    • Full antivirus
    • VPN with 55 servers
    • Password manager
  • Premium Plus$11.67/month
    • All Premium features
    • 30 devices covered

uBlock Origin

Free
  • FreeFree
    • Ad blocking
    • Tracker blocking
    • Custom filter lists

Which should you pick?

Choose Avast One if

  • You need antivirus.
  • You want to start without paying.
  • You work on Windows, macOS, iOS, Android.
  • You also want firewall.
Avast One review

Choose uBlock Origin if

  • You need ad blocking.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want tracker blocking.
uBlock Origin review

Questions people ask

Is Avast One or uBlock Origin better?
Neither clearly leads. Avast One starts at Free and uBlock Origin at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Avast One or uBlock Origin?
Avast One starts at Free and uBlock Origin at Free.
Does Avast One or uBlock Origin run on more platforms?
Avast One runs on Windows, macOS, iOS, Android. uBlock Origin runs on Chrome, Firefox, Edge, Opera.
Can I use Avast One for free?
Both have a free tier, so you can try either at no cost before committing.
What is Avast One best used for?
Avast One is most often used for antivirus, internet security, privacy tools. Of those, antivirus and internet security are not what uBlock Origin is typically brought in for.
What can Avast One do that uBlock Origin cannot?
Avast One covers Antivirus, Firewall, VPN, Data breach monitoring. uBlock Origin covers Ad blocking, Tracker blocking, Malware domain blocking, Custom filter lists.

Answered from the vendors’ own pages

Avast One: Is Avast One free?

Yes. Avast One offers a free tier with antivirus, VPN (limited), and privacy tools. Paid plans start at $2.99/month for Silver and $4.19/month for Premium covering up to 5 devices.

Source
uBlock Origin: How much does uBlock Origin cost?

uBlock Origin is completely free and open-source software with no licensing fees, subscriptions, or commercial restrictions.

Source
Avast One: What does Avast One include?

Avast One provides antivirus, VPN, password manager, device cleanup, Wi-Fi security, data breach monitoring, and protection against AI-generated scams and deepfakes.

Source
uBlock Origin: Is uBlock Origin open source?

Yes, uBlock Origin is distributed under the GPL-3.0 License with source code publicly available on GitHub. The project encourages community review and contribution.

Source
Avast One: Does Avast One have ransomware protection?

Ransomware protection is available only on paid plans, not the free tier. Free users get antivirus and basic protection only.

Source
uBlock Origin: Does uBlock Origin accept donations?

No, uBlock Origin explicitly does not accept donations. The project instead encourages users to support the developers maintaining the filter lists that power the extension.

Source
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