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Piwik Pro vs Causality Engine

Piwik Pro is best for privacy-conscious organizations needing GA4 alternative. Choose Causality Engine when you need a defensible per-channel read before a budget decision, from the GA4 export you already have.

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€99 once, excl. VAT. Keep Piwik Pro; use us as the causal second opinion.

Side by side. Every fact sourced.

Short answer: Keep Piwik Pro. Causality Engine is not a replacement for it: it installs nothing and reads the GA4 export you already have, so it adds a read of what each channel caused on top of Piwik Pro's first-party web analytics with consent management, for €99.

Scroll the table sideways for every column.

Causality Engine compared with Piwik Pro: data, measurement, buying, company and reviews. Vendor facts read 12 October 2026, each with its source below the table.
Compared onCausality EngineThe layer on topPiwik ProPrivacy-first analytics platform
Compatible with Causality EngineIt is the layerReads your GA4 exportYesKeep Piwik Pro, add the read
Pay once, no subscriptionYes€99 per read; Pro at €299 a month is optionalSubscription€36/mo
Price stays flat as you growYes€99 a read, whatever your revenue or ad spendNot stated
Money back if it does not helpYesFull refund within 30 days, no questions askedFees are non-refundable1
MethodCausal inference on your GA4 exportFirst-party web analytics with consent management
Starting price€99 once, excl. VAT€36/mopiwikpro.de/preise, read
Pricing model€99 per read, or Pro at €299 a monthBusiness from €36/mo; Enterprise from €366/mo billed annually
SetupUpload a GA4 export; results in 1 to 2 minutesTracking code install, with its consent manager
Best forEcommerce brands on GA4 spending on two or more channelsPrivacy-conscious organizations needing GA4 alternative
How it gets your data
Needs its own pixel, tag or SDKNoNothing to installYes2
Works with Google Analytics 4YesA GA4 export is the inputNo3
Native store integrationsAny store that runs GA4Shopify, WooCommerce, Shopware, Magento or a custom buildShopify, WooCommerce4
Server-side tracking or conversion APIsNoIt reads data you already collectYes5
What it measures
Multi-touch attributionNoCausal attribution: what each channel causedYes6
Marketing mix modellingNoNot stated
Incrementality or holdout testsNoNo test to runNot stated
Post-purchase surveysNoNot stated
How you buy it
Self-serve sign-upYesUpload at /startYes7
Free trial or free planFirst finding freeThe €99 read is refundable within 30 days30-day free trial (Business plan, EU-language sites)8
Billing termsNone for the readPro is billed monthly, cancel any timeMonthly or annual (Business); annual (Enterprise)9
Who makes it
HeadquartersUtrecht, NetherlandsWrocław, Poland10
Founded2023201311
States EU data hostingYesPrimary infrastructure in the EU, per our privacy policyYes12
What reviewers say
G2Not listed yetNot stated
CapterraNot listed yet4.6 stars (21 reviews)13
Shopify App StoreNo appNothing to installNot stated

Causality Engine installs nothing on your site. It reads the GA4 export you already have, so it runs on top of any tool here without touching its setup. The one condition: GA4 runs on your store too. “Not stated” means we could not find it on the vendor's own pages or listings on 12 October 2026; it does not mean the feature is missing.

Sources, read 12 October 2026

  1. 1. piwik.pro/business-tos: “All Fees are non-cancellable and once paid are non-refundable.”
  2. 2. piwik.pro/integrations: “Install the Piwik PRO module to add the tracking code container.”
  3. 3. help.piwik.pro/support/questions/can-i-import-data-from-google-analytics: “Unfortunately, it's not possible to import data from Google Analytics to Piwik PRO.”
  4. 4. piwik.pro/integrations: “Easily integrate Piwik PRO with your Shopify store to track customer behavior, optimize sales, and improve marketing efforts.”
  5. 5. piwikpro.de/server-side-tracking-tagging: “Implementieren Sie das hybride Server-Side-Tracking von Piwik PRO mit einem First-Party-Collector für sichere und flexible Analysen.”
  6. 6. help.piwik.pro/support/questions/attribution-models: “Piwik PRO offers various attribution models to choose from: last-click, position-based, first-click, last-non-direct-click, time-decay, linear and custom models.”
  7. 7. piwikpro.de/preise: “Nein, Sie müssen keine Kreditkartendaten angeben, um die Testversion des Business-Plans zu starten.”
  8. 8. piwikpro.de/preise: “Die Testversion ist 30 Tage gültig.”
  9. 9. piwikpro.de/preise: “Wir rechnen Ihr Abonnement im Voraus ab - monatlich oder jährlich, je nach gewähltem Plan.”
  10. 10. linkedin.com/company/piwik-pro: “Headquarters Wroclaw”
  11. 11. piwik.pro/about: “Piwik PRO was launched in 2013 as an Analytics Platform built with privacy at its core.”
  12. 12. piwik.pro/privacy-security: “Our clients can choose between Azure cloud servers in the US, Germany, Hong Kong, the Netherlands, and Elastx in Sweden.”
  13. 13. capterra.com/p/150623/Piwik: “Overall rating Based on 21 user reviews See all reviews 4.6”

Every tool we track, on every fact · The same facts as JSON

Competitor pricing is each vendor's publicly listed pricing as read on the date shown, and it changes without notice: verify on the vendor's own site before relying on it. Vendors without a public price are marked as such. Comparisons set Causality Engine's one-time €99 analysis against subscription models.

Where Piwik Pro falls short

  • Web analytics tool, not marketing attribution
  • No causal inference or incrementality
  • Product and web analytics; it does not estimate incremental channel contribution for budget decisions
  • Privacy-first tracking ≠ attribution methodology

What Causality Engine does differently

  • No pixel and no tag. It reads the GA4 export you already have, where Piwik Pro needs its own tracking on the store.
  • What each channel caused, next to what last-click gave it, with a data-health score on every channel.
  • The first number 1 to 2 minutes after the upload, on whatever GA4 history you export; 12 months or more reads best.
  • €99 once, excl. VAT. Pro is €299 a month, billed monthly, cancel any time.
  • Full refund within 30 days, no questions asked. You keep the read.

Piwik Pro and Causality Engine: questions

  • What does Piwik Pro cost?
    Piwik Pro's pricing page lists €36/mo.Source: piwikpro.de/preise, read .
  • How does Piwik Pro measure, and how does Causality Engine?
    Piwik Pro: First-party web analytics with consent management. Causality Engine: causal inference on your GA4 export, showing what each channel caused next to what last-click gave it.
  • Does Piwik Pro need a pixel or tracking script?
    Yes, according to piwik.pro. Causality Engine needs none: nothing to install.Source: piwik.pro/integrations, read .
  • What does Causality Engine cost?
    The first finding is free and runs in your browser before any signup. The full read is €99 once, excl. VAT, refundable within 30 days, no questions asked. Pro is €299 a month, billed monthly, cancel any time. The price does not rise with revenue, ad spend, orders or traffic.
  • Can I use Causality Engine together with Piwik Pro?
    Yes. Causality Engine installs nothing on your site. It reads the GA4 export you already have, so it runs on top of any tool here without touching its setup. The one condition: GA4 runs on your store too.

Keep reading

Four named Dutch brands and our own store, with the figures they let us publish: the case studies.

GA4 export uploadNo pixel1–2 minutes to a first read30-day refund, no questions asked

Your platforms guess.
We run the math.

Upload a GA4 export and see what each channel caused, next to last-click, in 1–2 minutes. The read is yours to keep.

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The free finding runs in your browser. Your file never leaves it. The full read is €99, refundable within 30 days, no questions asked. Prices exclude VAT.