Causality Engine vs Ruler Analytics: Online Orders or Won Deals

The short answer: it comes down to where the sale closes, at a checkout or in a CRM weeks after the click. If your revenue lands at an online checkout that GA4 records, pick Causality Engine. A causal read of every channel in your GA4 export costs €99 (pricing, checked on 27 October 2026), and the first finding is free on the start page. Some revenue arrives as a form, a phone call or a live chat, closed by a salesperson in the CRM weeks later. Ruler Analytics was built to tie those deals back to marketing. It starts from €344 a month on monthly billing for a site with up to 10,000 visits a month (Ruler pricing, checked the same day).

Disclosure: I founded Causality Engine and own it, and this page recommends it. Every claim about it links to Causality Engine's own pages.

Both promise to fix last-click, for different businesses. One reads where buyers came from before they paid online. The other follows a lead from the first visit to the invoice.

Before you compare features:

1. Sort last quarter's revenue by where it closed. Online checkout, phone, quote form, showroom, sales call. If most of it closed at checkout, GA4 already holds the paths to read. If most of it closed in the CRM, a GA4 export sees the form fill and never the deal.
2. Do the yearly sum. For example, a site with 40,000 visits a month falls in Ruler's Medium band. That is 12 x €575 = €6,900 a year on monthly billing, or 12 x €517 = €6,204 on annual billing, per its pricing page. Four quarterly Causality Engine reads come to 4 x €99 = €396, per its checkup page.
3. List what you already run. Ruler connects to CRMs such as HubSpot, Salesforce and Pipedrive, to call tracking and to stores such as Shopify, per its pricing page. Causality Engine needs the GA4 export and nothing else.
4. Pick the number that proves it. For a lead business, closed-won revenue in the CRM. For a store, net revenue after refunds. Check either tool against that, not against its own dashboard.

The two, row by row

Where the sale is recorded decides it

Ruler's lead generation page describes the chain. It tracks each anonymous visitor across sessions and matches them when they convert by form, call or chat. It passes the source and campaign to the CRM, and attributes revenue once the deal closes. That is the job of a professional services firm, a car dealer or a software company whose sale happens after the website. It also sells into retail, where its retail page adds phone orders, showrooms and mix modelling of TV and out-of-home.

Causality Engine starts at the other end: the purchase GA4 already recorded. Its integrations page says it measures every channel visible in the GA4 data, email, organic, direct and referral included. Its costs page is plain about what that leaves out: no offline, retail or in-store measurement, and no analyst on a call. If a phone line closes your biggest orders, Ruler wins on that line alone.

Five rules, or one question

Ruler lets you switch between first click, last click, time decay, linear and position-based models. Data-driven and impression attribution come on Medium and above, per its pricing page. GA4 itself dropped first click, linear, time decay and position-based in November 2023, according to Google's attribution settings help. So a team that wants those views needs a tool like Ruler.

Five rules is a real choice, and most of them are gone from Google's own reports. They are also five answers to the same question: who touched the sale. None of them asks whether the sale would have happened without the touch. Causality Engine's causal attribution page builds the read around that second question, and grades every channel's answer with a data-health score from 0 to 100.

Priced by traffic, priced by read

On Ruler's pricing page, checked on 27 October 2026, monthly billing in euros starts at €344 a month for up to 10,000 visits. It is €575 for up to 50,000 and €1,156 for up to 100,000. From 100,000 visits it is €1,739, the tier that adds mix modelling and the AI agent. Annual billing saves 10%: €309, €517, €1,043 and €1,565 a month. The page calls these indicative, scaled by traffic and by product, data and integration needs. Every tier includes a dedicated customer success manager and white-glove onboarding.

Causality Engine's pricing page lists €99 per read, refundable within 30 days, Pro at €299 a month billed monthly, and a custom Enterprise pilot, before VAT. None of those figures is tied to visits.

What the pricing page shows first

Ruler's pricing page opens with annual billing selected. In euros the Small plan shows €309 a month, the rate that comes with a year's deal. Anyone who reads that as the monthly price has read the page as it loads. Monthly billing for the same plan is €344, one click away on the same page. The default is the commitment. Price the plan on the toggle you would choose, then compare.

Choose Causality Engine if your job is

• Measuring what Meta, Google, TikTok, email and organic caused on an online store, from the GA4 data already collected.
• Getting that answer for a fixed €99 a read, however your traffic moves.
• Checking a channel before cutting it, with a next step to test in one region.

Choose Ruler Analytics if your job is

• Tying calls, forms and chats to closed deals in Salesforce, HubSpot or Pipedrive, and sending that revenue back to the ad platforms.
• Lead generation or B2B, where the sale closes after the website and weeks after the click.
• Retail with phone orders and showrooms, or TV and out-of-home that need a mix model.

For a plain definition of the product, see Causality Engine in the glossary.

A free sorting exercise, then the read

The first step costs nothing and needs no tool: the revenue split from the list above, by where each sale closed. It tells you which kind of attribution your business needs before any vendor gets a call. If checkout wins, drop your GA4 export on the start page. The free preview of the channels behind your Direct traffic is worked out in your browser.

Causality Engine, which I founded, runs the full read on the same upload at app.causalityengine.ai/start for €99, refundable within 30 days, with Pro for stores whose budgets move weekly. The how-it-works page shows the three steps and the assumptions behind them. If the export holds too few converting paths to separate a channel, the data-health score says so before you move money on it.

FAQ

Does Ruler Analytics work for Shopify stores?

Yes. Its pricing page lists Shopify, WooCommerce and BigCommerce among its ecommerce conversion sources. Its retail page describes tracking online, phone and in-store orders.

Can Causality Engine see phone sales or CRM deals?

Only what reaches GA4. It reads the channels recorded in the GA4 export. A deal closed by phone and logged only in the CRM is outside the read, as its costs page says about offline measurement.

Which one includes marketing mix modelling?

Ruler, on its Advanced plan, from €1,739 a month on monthly billing in euros, checked on 27 October 2026 on its pricing page. Causality Engine's MMM page presents its read as the faster alternative to a mix model, not as one.