Google Analytics 4
GoogleFree market standard for traffic and campaign reporting.
Web & product analytics. Google Analytics 4 vs Piwik PRO vs Amplitude — 2026 comparison.
Google Analytics 4, Piwik PRO and Amplitude Comparison — 2026 Overview
Objective comparison of web and product analytics platforms: privacy, pricing, data retention, experiments, and tool selection recommendations.
Overview of three analytics platforms
Each tool represents a different ecosystem and way of working — from Google marketing to EU privacy to product analytics. Below is a concise comparison.
Piwik PRO
Piwik PROEuropean GA4 alternative with built-in CMP and Tag Manager.
Amplitude
AmplitudeDeepest behavioral analytics for digital products.
Pricing and licensing model
Comparison of license costs and fee structures (as of May 2026).
| Aspect | Google Analytics 4 | Piwik PRO | Amplitude |
|---|---|---|---|
| Licensing model | Freemium (standard) + GA4 360 (enterprise, annual contract) | Core (free) + Business + Enterprise (by action volume) | Starter (free) + Plus + Growth + Enterprise (custom) |
| Free tier | Full standard functionality at no license cost | Core — e.g. up to ~500,000 events/month (limits may change) | Starter — ~10,000 MTU/month (Monthly Tracked Users) |
| Paid plans (entry) | GA4 360: from ~$50,000/year (custom quote) | Business: from ~€35/month (up to 2M actions); Enterprise: from ~€366/month | Plus: from ~$49–61/month; Growth/Enterprise: custom pricing |
| Cost at scale | 360 + BigQuery — costs grow with scale and advanced stack | Scales by actions; private cloud / on-premise in Enterprise | Price grows with MTU and events; advanced modules (AI, experiments) extra |
| Orientation example | $0 on standard; 360 for enterprises with tens of thousands USD/year budget | Strong privacy/compliance value in EU (SMB from ~€35/month) | Generous free start; at large SaaS scale — dedicated product team budget |
Verdict: GA4 wins on entry cost ($0) for Google marketing. Piwik PRO offers the best privacy/compliance value in Europe. Amplitude has a free product analytics tier, but full power (experiments, AI) requires paid plans.
Feature matrix
Comparison of key technical and operational capabilities — from privacy and data retention to experiments, AI, and raw data export.
| Feature | GA4 | Piwik PRO | Amplitude |
|---|---|---|---|
| Privacy and GDPR | Weaker — US transfers, data in Google ecosystem; requires CMP and Consent Mode v2 | Best — full control, no sharing with third parties | Medium — EU data center on higher plans; no built-in CMP |
| Data residency | Global (no full localization guarantee) | EU (Sweden) + private cloud (Azure, 60+ regions) / on-premise | Mainly US; EU option from Growth plan |
| Regulatory compliance | GDPR — problematic in many EU interpretations; HIPAA — not recommended | GDPR, CCPA, LGPD; HIPAA on Enterprise | GDPR/CCPA (basic); no HIPAA |
| Data freshness | 4–8 hours (partial real-time); delays in standard reports | ~30 minutes | Real-time |
| Data retention | Max 14 months (standard); up to 50 months on GA4 360 | 25+ months (plan-dependent) | Unlimited on paid plans |
| Sampling | Yes — e.g. in Explorations at high volume (> ~10M events) | None (100% of data in reports) | None / minimal |
| Built-in Tag Manager + CMP | No — separate GTM + external CMP | Yes — Tag Manager + Consent Manager + CDP in one platform | No — consent handled in your application layer |
| Session Replay | No | No (external integrations) | Yes — built-in |
| A/B tests and feature flags | Very limited | Basic (often via integrations) | Best in class (Feature Experiment, Web Experiment) |
| AI / predictive analytics | Basic (mainly on 360) | Basic | Advanced (AI Assistant, predictive audiences — 2026) |
| Funnels, cohorts, retention | Good (Explorations) | Very good (retroactive, familiar reports) | Best (user timelines, advanced cohorts) |
| Marketing attribution | Data-driven and Google models (limits on free) | Full customization and model comparison | Good (behavioral); weaker than GA4 for paid media |
| Raw data export | BigQuery (free export with daily limits) | API, CSV, BigQuery; Tableau on Enterprise | API, connectors (Snowflake, BigQuery, AWS) |
| Ecosystem integrations | Native Google: Ads, GSC, YouTube, Looker, Merchant Center | Looker Studio, BI (Tableau, Power BI), CDP, Google Ads via connectors | Segment, Braze, Iterable, Snowflake, dbt — product stack |
| Support | Community + Google documentation | Enterprise: dedicated manager + SLA | Good (especially Enterprise) |
| Ease of deployment | Medium — steep curve on event model | Easier — similarity to Universal Analytics | Requires solid event plan; intuitive UI for product teams |
Detailed profiles
Strengths, weaknesses, and typical deployment scenarios for each platform.
Google Analytics 4
Pros
- Completely free standard — powerful to start
- Native integration with Google Ads, Search Console, YouTube, and BigQuery
- Strong for acquisition, marketing paths, and ad conversions
- Huge community, documentation, and tutorial base
Cons
- Privacy issues in Europe (DPA decisions in AT, FR, IT)
- Only 14 months retention on standard
- Sampling and modeled data in advanced reports
- No built-in CMP or Tag Manager — separate configuration required
Best for: Organizations without strict GDPR constraints, deeply embedded in Google, with technical capacity for BigQuery or server-side GTM.
Piwik PRO
Pros
- Best choice for European and regulated companies (finance, healthcare, public sector)
- Full data ownership — no sharing with Google or others
- Built-in Tag Manager, Consent Manager, and CDP in one platform
- 25+ months retention without sampling; often higher session accuracy than GA4
Cons
- Less advanced product analytics than Amplitude (no native Session Replay)
- Smaller community and fewer training materials than GA4
- Costs grow at very high action volumes
Best for: Organizations prioritizing GDPR, data ownership, and EU hosting — or seeking a familiar interface after Universal Analytics migration.
Amplitude
Pros
- Most powerful user behavior analytics (product analytics)
- Top-tier funnels, cohorts, retention, path analysis, and user timelines
- Session Replay and experiments (feature flags, web experiments)
- Real-time, unlimited retention (paid plans), and strong AI features (2026)
Cons
- Higher cost at large MTU/event volumes
- Weaker in classic marketing campaign attribution than GA4
- Good privacy but no built-in CMP — consent on application side
Best for: Product teams, SaaS, mobile apps, and PLG — when retention, LTV, and feature optimization matter more than ad traffic alone.
Recommendations by scenario
There is no single “best” analytics tool — the choice depends on your marketing ecosystem, privacy requirements, and whether you optimize campaigns or digital product.
Small or mid-size company, $0 budget, Google ecosystem (Ads, GSC)
Recommendation Google Analytics 4
Lowest entry cost and native connection to Google campaigns.
European company, regulated industry, GDPR and data control priority
Recommendation Piwik PRO
Full privacy, EU hosting, built-in CMP, and no sampling.
Startup / product team, SaaS, retention and feature optimization
Recommendation Amplitude
Deepest behavior analytics, experiments, and product intelligence.
Marketing + digital product (hybrid stack)
Recommendation GA4 + Amplitude or Piwik PRO + Amplitude
Marketing/acquisition in GA4 or Piwik + product analytics in Amplitude.
Large company with budget and compliance needs (HIPAA, public sector)
Recommendation Piwik PRO Enterprise
Private cloud, SLA, HIPAA, and full data ownership.
Maximum data accuracy without modeling and sampling
Recommendation Piwik PRO
100% of data in reports and longer retention than GA4 standard.
E-commerce store with intensive Google Ads campaigns
Recommendation GA4 (optionally Piwik PRO in parallel for EU)
GA4 feeds ad algorithms; Piwik supplements EU compliance.
Summary
Google Analytics 4
Still the most popular marketing standard — ideal at $0 and in the Google ecosystem, but more EU companies seek alternatives due to privacy.
Piwik PRO
Best fit for most Polish and European companies in 2026 — GDPR, data control, and a familiar interface without giving up web analytics.
Amplitude
King of product analytics — when the business runs on digital product and retention, cohorts, and experiments matter, not just traffic source.
Need analytics implementation support?
I help you choose a platform, design a measurement plan, and implement GA4, Piwik PRO, or a hybrid stack (marketing + product analytics) — with Consent Mode, GTM, and BigQuery.