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Mozilla Firefox vs Umami

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
Umami logo

Umami

Marketing

Open source, cookie-free web analytics you can self-host for the cost of a database

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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.; Umami there is no cohort analysis, retention curve, session replay or multi-touch attribution, so a marketing team that needs to justify channel spend will still buy a second tool and Umami becomes a supplementary dashboard.
  • They diverge on capability: Mozilla Firefox covers Gecko engine, Umami covers Cookie-free tracking.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Mozilla Firefox and Umami actually diverge.

Attributes where Mozilla Firefox and Umami differ
AttributeMozilla FirefoxUmami
Pricing modelUnknownPer month by event count
PlatformsWindows, macOS, Linux, iOS, AndroidWeb, Linux
CategoryTechnologyMarketing
Founded2004Unknown

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 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 Umami

  • Cookie-free tracking
  • Self-hosting
  • Small tracking script
  • Custom events
  • Funnels and goals
  • Multi-site and teams
  • Public dashboards
  • API access

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 Umami
  • Users who require a full-strength content blocker, which Chrome's Manifest V3 no longer permitsnot Umami
  • Managed fleets that need a browser on a slow release cadence with Group Policy control, using the ESR channelnot Umami
  • Handling several accounts on the same service at once through container tabs, without separate profiles or private windowsnot Umami

Umami

  • A developer who wants traffic numbers on a personal or client site without adding a consent bannernot Mozilla Firefox
  • An organisation whose legal or procurement team has ruled out sending visitor data to a US advertising companynot Mozilla Firefox
  • A high-traffic site where hosted analytics priced by pageview band has become expensive and self-hosting removes the ceiling entirelynot Mozilla Firefox
  • A team that wants analytics data in a database they already control so they can query and join it themselvesnot 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.

Umami

  • There is no cohort analysis, retention curve, session replay or multi-touch attribution, so a marketing team that needs to justify channel spend will still buy a second tool and Umami becomes a supplementary dashboard.
  • Self-hosting is only free in licence terms; you own the database, the upgrades, the backups and the query performance at scale, and a busy site's events table grows quickly enough to need real attention.
  • Because it stores no persistent identifier, it cannot follow a user across devices or sessions in any meaningful way, which makes returning-visitor and lifetime-value questions unanswerable by design rather than by omission.
  • Cloud overage is billed per event beyond the plan allowance, so a traffic spike or a badly instrumented custom event can produce a bill materially above the $20 or $200 headline before anyone notices.
  • It is maintained by a small team, so the pace of new capability is modest and enterprise expectations such as SSO, granular role permissions and formal support agreements are limited compared with commercial analytics vendors.

Pricing, plan by plan

Mozilla Firefox

Free

No published plan breakdown. See the Mozilla Firefox review.

Umami

Free
  • Self-hostedFree
    • MIT licensed, no licence fee
    • No event limit imposed by the software
    • Unlimited websites and users
  • Cloud HobbyFree
    • Up to 100,000 events per month
    • 3 websites
    • 6 months data retention
  • Cloud Pro$20/month
    • Up to 1,000,000 events per month
    • Unlimited websites
    • Unlimited team members
  • Cloud Business$200/month
    • Up to 10,000,000 events per month
    • All Pro features
    • Higher volume overage rate

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 Umami if

  • You need cookie-free tracking.
  • You want to start without paying.
  • You work on Web, Linux.
  • You also want self-hosting.
Umami review

Questions people ask

Is Mozilla Firefox or Umami better?
Neither clearly leads. Mozilla Firefox starts at Free and Umami at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mozilla Firefox or Umami?
Mozilla Firefox starts at Free and Umami at Free.
Does Mozilla Firefox or Umami run on more platforms?
Mozilla Firefox runs on Windows, macOS, Linux, iOS, Android. Umami runs on Web, Linux.
Can I use Mozilla Firefox for free?
Both have a free tier, so you can try either at no cost before committing.
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 Umami is typically brought in for.
What can Mozilla Firefox do that Umami cannot?
Mozilla Firefox covers Gecko engine, Full webRequest blocking, Total Cookie Protection, Container tabs. Umami covers Cookie-free tracking, Self-hosting, Small tracking script, Custom events.

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.

Umami: Is Umami really free?

Self-hosted, yes; it is MIT licensed with no event cap. You pay for the server and database. Umami Cloud has a free tier at 100,000 events a month and paid tiers from $20.

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.

Umami: Do I need a cookie consent banner?

For Umami analytics specifically, generally no, because it sets no cookies and stores no personal data. Other tags on your site may still require one.

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.

Umami: Can it replace Google Analytics?

For traffic, referrers and event counts, yes. For attribution modelling, audiences and advertising integration, no.

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.

Umami: What does it need to run?

A container and a PostgreSQL or MySQL database. Most people deploy it on infrastructure they already pay for.

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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