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Mozilla Firefox vs Private Internet Access

Mozilla Firefox logo

Mozilla Firefox

Technology

An independent web browser with its own rendering engine, funded almost entirely by search placement deals.

From
Free
Rated
-
Full reviewWebsite
P

Private Internet Access

Cybersecurity

Long-standing VPN service with a large server network and flexible multi-year plans

From
$11.99/month
Rated
-
Full reviewWebsite

The short version

  • Only Mozilla Firefox has a free tier, so it costs nothing to try first.
  • Each has a real cost: Mozilla Firefox roughly 85 per cent of Mozilla's revenue comes from search default placement deals, overwhelmingly with Google, so the organisation that competes with Chrome depends on Chrome's owner for its funding and any renegotiation lands on Firefox's engineering budget within a quarter.; Private Internet Access monthly plan is priced noticeably higher than the discounted multi-year commitments, penalizing short-term users.
  • They diverge on capability: Mozilla Firefox covers Gecko engine, Private Internet Access covers Split tunneling.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Mozilla Firefox and Private Internet Access actually diverge.

Attributes where Mozilla Firefox and Private Internet Access differ
AttributeMozilla FirefoxPrivate Internet Access
Starting priceFree$11.99/month
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsWindows, macOS, Linux, iOS, Androidwindows, mac, linux, ios, android
CategoryTechnologyCybersecurity
Founded2004Unknown

Identical on both: 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 Mozilla Firefox

  • Gecko engine
  • Full webRequest blocking
  • Total Cookie Protection
  • Container tabs
  • Extended Support Release
  • policies.json and ADMX
  • Built-in developer tools
  • Firefox Sync

Only in Private Internet Access

  • Split tunneling
  • Kill switch
  • Ad and tracker blocking
  • Dedicated IP add-on
  • Bundled antivirus add-on

What people use each for

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

Mozilla Firefox

  • Web development where you need to test against a non-Chromium engine before shipping, because Chromium-only testing hides real bugsnot Private Internet Access
  • Users who require a full-strength content blocker, which Chrome's Manifest V3 no longer permitsnot Private Internet Access
  • Managed fleets that need a browser on a slow release cadence with Group Policy control, using the ESR channelnot Private Internet Access
  • Handling several accounts on the same service at once through container tabs, without separate profiles or private windowsnot Private Internet Access

Private Internet Access

  • Encrypting traffic on public Wi-Fi with a kill switchnot Mozilla Firefox
  • Blocking ads and trackers network-wide via MACEnot Mozilla Firefox
  • Maintaining a consistent connection identity with a dedicated IP add-onnot Mozilla Firefox
  • Committing to a long-term plan for a lower effective monthly ratenot Mozilla Firefox

Where each one falls short

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

Mozilla Firefox

  • Roughly 85 per cent of Mozilla's revenue comes from search default placement deals, overwhelmingly with Google, so the organisation that competes with Chrome depends on Chrome's owner for its funding and any renegotiation lands on Firefox's engineering budget within a quarter.
  • Desktop market share sits at a few per cent, so commercial sites are tested against Chrome and Safari and a Firefox-only rendering or WebRTC bug is triaged as low priority by the site owner, leaving you with the workaround.
  • On iOS and iPadOS the browser is a WebKit shell required by Apple's rules, so it delivers the interface and Sync but none of the engine, extension or tracking-protection behaviour that make Firefox worth choosing on desktop.
  • Mozilla declines to implement several hardware-facing APIs on principle, including WebUSB, WebSerial, Web Bluetooth and WebHID, so a web application that talks to a device simply does not run and no configuration flag changes that.
  • Enterprise management is limited to policies.json and ADMX templates; there is no first-party equivalent of Chrome Browser Cloud Management, so fleet-wide reporting on versions and extensions requires third-party tooling you have to buy or build.
  • Mozilla repeatedly ships decisions its own user base objects to, such as enabling Privacy Preserving Attribution by default and the 2025 Terms of Use rewrite, and reversals arrive after the news cycle, so deploying it on a privacy argument means owning the communications work each time.

Private Internet Access

  • Monthly plan is priced noticeably higher than the discounted multi-year commitments, penalizing short-term users.
  • Dedicated IP and antivirus are paid add-ons rather than included features.
  • Headquartered in a jurisdiction whose privacy reputation some competitors market against, despite audited no-logs claims.
  • App interface is less streamlined than some higher-priced premium VPN competitors.

Pricing, plan by plan

Mozilla Firefox

Free

No published plan breakdown. See the Mozilla Firefox review.

Private Internet Access

$11.99/month
  • Monthly$11.99/month
    • Billed month to month
    • Full server network access
    • 30-day money-back guarantee
  • 1-Year$3.1/month
    • Billed annually at $37.19
    • Full server network access
  • 2-Year$2.19/month
    • Lowest advertised rate, billed every 2 years
    • Full server network access

Which should you pick?

Choose Mozilla Firefox if

  • You need gecko engine.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want full webrequest blocking.
Mozilla Firefox review

Choose Private Internet Access if

  • You need split tunneling.
  • You work on windows, mac, linux, ios, android.
  • You also want kill switch.
Private Internet Access review

Questions people ask

Is Mozilla Firefox or Private Internet Access better?
Neither clearly leads. Mozilla Firefox starts at Free and Private Internet Access at $11.99/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mozilla Firefox or Private Internet Access?
Mozilla Firefox has a free tier; the other does not. Paid plans start at Free for Mozilla Firefox and $11.99/month for Private Internet Access.
Does Mozilla Firefox or Private Internet Access run on more platforms?
Mozilla Firefox runs on Windows, macOS, Linux, iOS, Android. Private Internet Access runs on windows, mac, linux, ios, android.
Can I use Mozilla Firefox for free?
Yes. Mozilla Firefox has a free tier, so you can try it without paying. Private Internet Access starts at $11.99/month.
What is Mozilla Firefox best used for?
Mozilla Firefox is most often used for web development where you need to test against a non-chromium engine before shipping, because chromium-only testing hides real bugs, users who require a full-strength content blocker, which chrome's manifest v3 no longer permits, managed fleets that need a browser on a slow release cadence with group policy control, using the esr channel, handling several accounts on the same service at once through container tabs, without separate profiles or private windows. Of those, web development where you need to test against a non-chromium engine before shipping, because chromium-only testing hides real bugs and users who require a full-strength content blocker, which chrome's manifest v3 no longer permits are not what Private Internet Access is typically brought in for.
What can Mozilla Firefox do that Private Internet Access cannot?
Mozilla Firefox covers Gecko engine, Full webRequest blocking, Total Cookie Protection, Container tabs. Private Internet Access covers Split tunneling, Kill switch, Ad and tracker blocking, Dedicated IP add-on.

Answered from the vendors’ own pages

Mozilla Firefox: Does uBlock Origin still work on Firefox?

Yes. Firefox has kept the blocking webRequest API that Chrome removed with Manifest V3, so uBlock Origin runs with its full rule set rather than the cut-down Lite version Chrome requires.

Mozilla Firefox: Is Firefox on iPhone the same browser?

No. Apple's platform rules require it to use WebKit, so on iOS and iPadOS you get Firefox's interface, Sync and bookmarks on top of Safari's engine. The privacy and extension behaviour are not the same.

Mozilla Firefox: How is Mozilla funded, and does that matter?

Mainly by payments for making a search engine the default, with Google as the dominant payer. It matters because it is a single-source dependency on a direct competitor, and it has been the subject of antitrust litigation whose outcome Mozilla does not control.

Mozilla Firefox: Can I manage it across a company fleet?

Yes, through policies.json or Windows Group Policy with the ADMX templates, and the ESR channel gives you a roughly yearly major version instead of four-weekly. There is no first-party cloud management console, so reporting needs other tooling.

Mozilla Firefox: Will every site work in it?

Most will. The exceptions cluster around sites tested only in Chrome, legacy enterprise applications, and anything using WebUSB, WebSerial, Web Bluetooth or WebHID, which Firefox does not implement at all.

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