Plausible vs Fathom Analytics vs Pirsch: Best Privacy-First Web Analytics in 2026?

Privacy-first web analytics has become a real category rather than a protest movement, and Plausible, Fathom Analytics and Pirsch approach it from three directions. Plausible is the open-source simplicity choice: a lightweight cookieless tracker with one flat dashboard, no GDPR consent banner required, and a self-hosted edition that is free with unlimited sites and data. Fathom Analytics is the commercial simplicity choice: an opinionated, closed-source product that also refuses cookies and cross-site tracking, but that competes on speed, unlimited data retention and a polished managed service rather than on self-hosting. Pirsch is the developer-first choice: a cookieless platform that tracks visits without cookies or local storage, then adds real-time dashboards, funnels, custom events and an API so traffic data can flow into your own tooling instead of living only inside a vendor dashboard.

Our testing methodology was identical across all three platforms. We installed each tracker on the same marketing site and documentation set — roughly 250,000 monthly pageviews across 40 pages, with a newsletter signup goal, a pricing-page goal and a documentation search event — then measured script weight, page load impact, goal accuracy, referral and UTM fidelity, and how each platform handled consent-blocked visitors. We ran all three side by side for a full month, compared reported totals against server logs, timed how long a non-technical editor took to answer three standard traffic questions, and calculated a realistic three-year total cost of ownership at that traffic level. We also interviewed site owners and developers running each platform and analyzed verified user reviews on G2 and Capterra.

The mental model each platform imposes is the real differentiator. Plausible thinks in one flat page of numbers: visitors, pageviews, sources, pages, countries, devices and goals, presented without segmentation layers, custom dimensions or user paths — its inability to do what Google Analytics does is the product. Fathom Analytics thinks the same way but adds commercial polish, offering unlimited sites, unlimited data retention and unlimited team members on every plan inside a dashboard designed to be read in thirty seconds. Pirsch thinks in developer primitives: events, funnels, an API and integrations, so the same cookieless dataset can power a real-time dashboard for a marketer and a REST call for an engineer building an internal report.

The audiences differ accordingly. Plausible suits website owners, indie developers, agencies and open-source projects that want an ethical, low-maintenance Google Analytics replacement and may prefer to run it themselves. Fathom Analytics suits small businesses, content publishers and agencies that want a paid, supported, banner-free analytics product with predictable flat pricing and no infrastructure responsibility. Pirsch suits developers, SaaS teams and privacy-focused agencies that need funnels, custom events and programmatic access to traffic data, and that are comfortable assembling analytics into their own stack. Mature teams often run two tools in parallel — a public privacy-first tracker such as Plausible or Fathom Analytics for editorial traffic, plus Pirsch or a product analytics platform for authenticated application events and funnel analysis.

Pricing is the clearest split. Plausible Cloud bills by pageviews with unlimited sites, team members and features on every plan: Growth at $9 per month for 10,000 pageviews, Pro at $19 per month for 100,000 pageviews, and Business at $69 per month for 10M pageviews, with a 30-day free trial — while self-hosting Plausible is free with unlimited sites and data. Fathom Analytics has no free tier at all: Starter at $15 per month for 100,000 pageviews, Growth at $35 per month for 500,000, Pro at $75 per month for 2M, and Business at $150 per month for 10M, all including unlimited sites, team members and data retention, plus a 30-day free trial. Pirsch is a paid subscription priced by monthly pageviews and number of sites, with a free trial and higher tiers unlocking funnels, custom events, longer retention, team access and API usage.

The sharpest functional divergence is analysis depth versus radical simplicity. Plausible deliberately stops at aggregate traffic reporting: there are no funnels, no session-level paths and no custom dimensions, so if you need to know why conversions dropped rather than that traffic dropped, Plausible will not answer. Fathom Analytics draws almost the same boundary, offering goal tracking and a clean dashboard but no behavioral funneling — its differentiator is commercial terms rather than analytical reach. Pirsch is the only one of the three that treats funnels and custom events as core features instead of out of scope, which makes Pirsch the realistic choice for teams that want cookieless tracking and still need conversion analysis plus an API for pushing that data elsewhere.

So where does each platform genuinely shine? Plausible is the strongest choice for anyone who wants free, open-source, self-hostable cookieless analytics, or the cheapest credible hosted plan at low traffic — Growth at $9 per month for 10,000 pageviews is the lowest entry price in the category. Fathom Analytics is the strongest choice for small businesses and agencies that want unlimited sites, unlimited data retention and unlimited team members on every paid plan without touching a server, and that accept paying from day one. Pirsch is the strongest choice for developers and SaaS teams that need cookieless tracking plus funnels, custom events and a real API. Our rule of thumb: if you only need traffic numbers, buy the simplest tracker you trust; if you need conversion analysis without cookies, Pirsch is the only one of the three built for it.

After a month of running all three trackers side by side on the same site, our conclusion is that there is no universal winner — there is a correct choice for each kind of site owner. Plausible won on price and principle: at $9 per month for 10,000 pageviews on Growth, or free entirely when self-hosted, it is the cheapest credible privacy-first analytics product available. Fathom Analytics won on commercial terms and readability, offering unlimited sites, unlimited team members and unlimited data retention on every plan inside a dashboard a non-technical owner can actually use. Pirsch won on capability, and it was the only platform of the three that could answer a conversion question with a funnel while remaining cookieless.

Where Plausible deserves praise is radical clarity: one small script, one flat dashboard, no cookies, no cross-site tracking, no consent banner, and an open-source codebase you can audit or run yourself for free with unlimited sites and data. Hosted pricing is the lowest in the category, with Growth at $9 per month for 10,000 pageviews, Pro at $19 for 100,000 and Business at $69 for 10M. Where it draws criticism is the analytical ceiling — no funnels, no paths and no custom dimensions mean Plausible tells you that traffic changed and never why conversions did. Teams that outgrow aggregate reporting typically move to Pirsch for funnels, or to a product analytics platform such as PostHog or Mixpanel.

Where Fathom Analytics deserves praise is commercial simplicity: Starter at $15 per month already includes unlimited sites, unlimited team members and unlimited data retention, which makes it unusually easy for an agency running dozens of client properties on one account. Its cookieless tracker needs no banner and complies with GDPR, CCPA and ePrivacy by design. Where it draws criticism is that you pay for all of that from day one — there is no free tier, only a 30-day trial — and the product is closed-source with no self-hosting path. Fathom Analytics also stops at goal tracking, so developers needing funnels, custom events or API automation choose Pirsch, while cost-sensitive site owners choose Plausible.

Where Pirsch deserves praise is treating analysis as part of privacy-first analytics: funnels, custom events, real-time dashboards and a genuine API mean you can measure conversion without deploying a cookie or a consent banner. Where it draws criticism is commercial transparency and entry-level scope — there is no permanent free plan and no free self-hosted edition, and funnels, custom events, longer retention, team access and API usage unlock only on higher tiers, so the cheapest Pirsch plan is narrower than Plausible at a comparable price. Pirsch also carries less brand recognition, which matters when a client or an auditor asks who your analytics vendor is.

The 2026 trend in this category is consolidation around consent-free measurement. Browser privacy changes, ad blockers and EU enforcement have made cookie-based analytics increasingly unreliable, so cookieless platforms such as Plausible, Fathom Analytics and Pirsch now win traffic accounts on data accuracy rather than on ideology. The second trend is the two-tool stack: a lightweight public tracker for editorial and marketing traffic, paired with a product analytics platform for authenticated application events. Very few teams try to make one privacy-first tool do both jobs, because none of them are built for funnel-level product analysis at scale.

Looking ahead, expect privacy-first trackers to add modest funnel and event capability while holding the line on script weight and consent-free operation, and expect the open-source versus closed-source split to remain the main ideological divide. The fundamentals are stable. If you need free or cheapest cookieless web analytics and can live with aggregate reporting, start with Plausible. If you need a fully managed, supported product with unlimited sites, unlimited team members and unlimited data retention, start with Fathom Analytics. If you need funnels, custom events and an API without cookies, start with Pirsch. Our rule of thumb: pay for the analysis you actually run, not for the feature list you will never open.