Looking for a Billy Grace alternative?
Billy Grace uses first-party pixel and MTA combined with MMM and is best for companies with €15k+ monthly ad spend and 300+ conversions. If the question is which channels actually drove revenue, not which ones were present at the click, Causality Engine answers it from the GA4 export you already have. No pixel.
€99 once, excl. VAT. Keep Billy Grace; use us as the causal second opinion.
Billy Grace and Causality Engine, side by side.
Short answer: Keep Billy Grace. 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 Billy Grace's first-party pixel and MTA combined with MMM, for €99.
Scroll the table sideways for every column.
| Compared on | Causality EngineThe layer on top | Billy GraceTracking, attribution, analytics and optimisation platform |
|---|---|---|
| Compatible with Causality Engine | It is the layerReads your GA4 export | YesKeep Billy Grace, add the read |
| Pay once, no subscription | Yes€99 per read; Pro at €299 a month is optional | Subscription€499/mo |
| Price stays flat as you grow | Yes€99 a read, whatever your revenue or ad spend | NoPriced on your ad spend |
| Money back if it does not help | YesFull refund within 30 days, no questions asked | Fees are non-refundable1 |
| Method | Causal inference on your GA4 export | First-party pixel and MTA combined with MMM |
| Starting price | €99 once, excl. VAT | €499/mobillygrace.com/pricing, read |
| Pricing model | €99 per read, or Pro at €299 a month | Six tiers priced by monthly ad spend (Launch €499/mo up to €25,000 ad spend, through Professional €3,250/mo; Enterprise custom), every tier via 'Book a demo', with €99 add-ons |
| Setup | Upload a GA4 export; results in 1 to 2 minutes | Install the Billy Pixel (Google Tag Manager, or Shopify-specific install) and connect channel and backend integrations |
| Best for | Ecommerce brands on GA4 spending on two or more channels | Companies with €15k+ monthly ad spend and 300+ conversions |
| How it gets your data | ||
| Needs its own pixel, tag or SDK | NoNothing to install | Yes2 |
| Works with Google Analytics 4 | YesA GA4 export is the input | Not stated |
| Native store integrations | Any store that runs GA4Shopify, WooCommerce, Shopware, Magento or a custom build | Shopify, WooCommerce, BigCommerce, Magento / Adobe Commerce, Salesforce Commerce Cloud3 |
| 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 | Yes6 |
| Incrementality or holdout tests | NoNo test to run | Yes7 |
| Post-purchase surveys | No | Not stated |
| How you buy it | ||
| Self-serve sign-up | YesUpload at /start | No8 |
| Free trial or free plan | First finding freeThe €99 read is refundable within 30 days | Demo only8 |
| Billing terms | None for the readPro is billed monthly, cancel any time | Annual (12-month minimum, auto-renews)9 |
| Who makes it | ||
| Headquarters | Utrecht, Netherlands | Amsterdam, Netherlands10 |
| Founded | 2023 | 202210 |
| 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 | Not stated |
| Shopify App Store | No appNothing to install | Not 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. billygrace.com/terms-conditions: “Pre-paid amounts are non-refundable, except in cases where the Customer terminates due to an uncured breach by Billy Grace.”
- 2. billygrace.com/feature-overview: “By using first-party data and machine learning models for session stitching, our pixel is prepared for the cookieless future”
- 3. billygrace.com/integrations: “E-commerce Salesforce Commerce Cloud … E-commerce Magento2 (Adobe Commerce) … E-commerce BigCommerce … E-commerce WooCommerce … E-commerce Shopify”
- 4. help.billygrace.com/en/articles/11383084-server-side-tagging-sst: “Server-side tagging sends Billy Pixel data from your server instead of directly from the browser.”
- 5. billygrace.com/attribution: “Our MTA model employs advanced deep learning to accurately assign value to each click interaction along the customer journey”
- 6. billygrace.com/attribution: “With UMM, we integrate Multi-Touch Attribution (MTA) with Marketing Mix Modeling (MMM) on a granular level.”
- 7. billygrace.com/incrementality-testing: “A geo holdout test reveals what's really driving your revenue, so your decisions are backed by proof.”
- 8. billygrace.com/pricing: “Launch €499 /month Ad spend p/m: €25.000 Pageviews p/m: Custom events: 3 Book a demo”
- 9. billygrace.com/terms-conditions: “The Agreement is entered into for an initial term of at least twelve (12) months and will be automatically renewed”
- 10. billygrace.com/about: “We are a fast-growing AI start-up based in Amsterdam that was founded in 2022 by three online marketers”
- 11. billygrace.com/terms-conditions: “The servers where Billy Grace stores its data are located in Ireland. This applies to both Billy Grace's data centre and their servers.”
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.
Why brands switch from Billy Grace
- Needs its own pixel or tag on the site, and browser privacy controls limit what a pixel can observe
- Multi-touch attribution allocates credit across observed touchpoints; it is not a counterfactual estimate of what a channel caused
What Causality Engine does differently
- No pixel and no tag. It reads the GA4 export you already have, where Billy Grace 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.
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.
Free, in your browser: your file is not uploaded. The full read is €99, refundable within 30 days. Prices exclude VAT.
Or book a 30-min call.