Amplitude vs Causality Engine
Amplitude is best for product and growth teams optimizing digital experiences. Choose Causality Engine when you need a defensible per-channel read before a budget decision, from the GA4 export you already have.
€99 once, excl. VAT. Keep Amplitude; use us as the causal second opinion.
Side by side. Every fact sourced.
Short answer: Keep Amplitude. 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 Amplitude's event-based product analytics + experimentation, for €99.
Scroll the table sideways for every column.
| Compared on | Causality EngineThe layer on top | AmplitudeDigital analytics and product intelligence |
|---|---|---|
| Compatible with Causality Engine | It is the layerReads your GA4 export | YesKeep Amplitude, add the read |
| Pay once, no subscription | Yes€99 per read; Pro at €299 a month is optional | SubscriptionFree plan; Plus from $0 |
| Price stays flat as you grow | Yes€99 a read, whatever your revenue or ad spend | NoPriced on your traffic or events |
| Money back if it does not help | YesFull refund within 30 days, no questions asked | Plus plan: fees are non-refundable1 |
| Method | Causal inference on your GA4 export | Event-based product analytics + experimentation |
| Starting price | €99 once, excl. VAT | Free plan; Plus from $0amplitude.com/pricing, read |
| Pricing model | €99 per read, or Pro at €299 a month | Free (2M events a month); Plus starts at $0 and scales with event volume; Growth and Enterprise custom |
| Setup | Upload a GA4 export; results in 1 to 2 minutes | SDK or tracking snippet install |
| Best for | Ecommerce brands on GA4 spending on two or more channels | Product and growth teams optimizing digital experiences |
| How it gets your data | ||
| Needs its own pixel, tag or SDK | NoNothing to install | Yes |
| Works with Google Analytics 4 | YesA GA4 export is the input | Yes2 |
| Native store integrations | Any store that runs GA4Shopify, WooCommerce, Shopware, Magento or a custom build | Shopify3 |
| Server-side tracking or conversion APIs | NoIt reads data you already collect | Yes4 |
| What it measures | ||
| Multi-touch attribution | NoCausal attribution: what each channel caused | Yes5 |
| Marketing mix modelling | No | Not stated |
| Incrementality or holdout tests | NoNo test to run | Not stated |
| Post-purchase surveys | No | Not stated |
| How you buy it | ||
| Self-serve sign-up | YesUpload at /start | Yes6 |
| Free trial or free plan | First finding freeThe €99 read is refundable within 30 days | Free plan (2M events/month, no time limit); no separate free trial7 |
| Billing terms | None for the readPro is billed monthly, cancel any time | Monthly or annual8 |
| Who makes it | ||
| Headquarters | Utrecht, Netherlands | San Francisco, United States9 |
| Founded | 2023 | 201210 |
| States EU data hosting | YesPrimary infrastructure in the EU, per our privacy policy | Yes11 |
| What reviewers say | ||
| G2 | Not listed yet | Not stated |
| Capterra | Not listed yet | 4.6 stars (68 reviews)12 |
| Shopify App Store | No appNothing to install | 3.3 stars (6 reviews)13 |
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. amplitude.com/plus-plan-terms: “All payment obligations are non-cancelable, and all Fees paid are non-refundable.”
- 2. amplitude.com/docs/data/source-catalog/ga4: “With Amplitude's Google Analytics 4 integration, you can ingest Google Analytics 4 data into your Amplitude project.”
- 3. amplitude.com/docs/data/amplitude-shopify-plugin: “Amplitude Shopify Plugin brings data from your Shopify store into Amplitude”
- 4. amplitude.com/docs/sdks: “Node.js SDK: Server-side Node.js services, APIs, and backends with TypeScript or JavaScript.”
- 5. amplitude.com/docs/analytics/charts/data-tables/data-tables-attribute-credit: “Linear: Distributes credit for the selected metric equally across all property values within the selected lookback window”
- 6. amplitude.com/pricing: “Free 2M Events/month forever. Start for free No Credit Card required.”
- 7. amplitude.com/pricing: “It's not a trial. There's no time limit.”
- 8. amplitude.com/docs/faq/billing-and-plans: “renews automatically every 12 months on the annual plan, or the first of every month on the monthly plan.”
- 9. amplitude.com/contact: “Headquarters Amplitude Inc. 201 3rd Street, Suite 200 San Francisco, CA 94103 United States”
- 10. amplitude.com/company: “2012: Amplitude's co-founders are accepted into Y Combinator (YC W12)”
- 11. amplitude.com/pricing: “EU data center option Included Included Included Included”
- 12. capterra.com/p/158741/Amplitude: “4.6 (68) ... Overall rating Based on 68 user reviews”
- 13. apps.shopify.com/amplitude: “Amplitude: Customer Analytics ... Rating 3.3 (6) Developer Amplitude”
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 Amplitude falls short
- Product analytics, not marketing attribution
- No marketing channel measurement
- Product and web analytics; it does not estimate incremental channel contribution for budget decisions
- Focused on product not marketing ROI
What Causality Engine does differently
- No pixel and no tag. It reads the GA4 export you already have, where Amplitude 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.
Amplitude and Causality Engine: questions
What does Amplitude cost?
Amplitude's pricing page lists Free plan; Plus from $0.Source: amplitude.com/pricing, read .Does Amplitude's price rise as you grow?
Yes. Priced on your traffic or events, according to its pricing page. Causality Engine is €99 a read, whatever your revenue or ad spend.Source: amplitude.com/pricing, read .How does Amplitude measure, and how does Causality Engine?
Amplitude: Event-based product analytics + experimentation. Causality Engine: causal inference on your GA4 export, showing what each channel caused next to what last-click gave it.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 Amplitude?
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.
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.