Same question, opposite method.
Cometly is a polished, Stripe-native pixel + CAPI multi-touch attribution tool. One-line install, high Meta CAPI match quality, MRR and LTV attribution for subscription and SaaS advertisers. If your central problem is feeding cleaner conversion events back to Meta and Google for in-platform optimization, Cometly is genuinely good at that.
But it's a touch-crediting tracker (first / last / linear / U-shaped / data-driven), not a causal model. It tells you which click to thank inside the model it picked. It doesn't tell you which sales wouldn't have happened anyway, and it doesn't report confidence intervals. Different question entirely.
// Cometly answers which touch gets the credit? → pixel + CAPI + rule-based model // Causality Engine answers which spend was actually incremental? → causal inference + confidence intervals
Same question, different answer. Often the opposite answer.
| Causality Engine | Cometly | |
|---|---|---|
| Method | Causal inference on GA4 + Shopify | Pixel + CAPI + MTA models |
| Confidence intervals? | Yes, on every read | Not reported |
| Install | None (CSV upload) | Comet Pixel + server-side + CAPI |
| Price | €99 per read · €299/mo Pro | Quote-only, reported from ~$150/seat |
| Best for | GA4 ecommerce budget decisions with stated uncertainty | Subscription/SaaS advertisers wanting better CAPI signal |
Which one is the right call for your situation.
Choose Cometly when
you're a SaaS or subscription advertiser whose core problem is feeding cleaner conversion events back to Meta and Google for in-platform optimization, and you want Stripe-tied MRR and LTV attribution on top of pixel-grade tracking. That's its home turf.
Choose Causality Engine when
the question is incrementality with stated uncertainty, not better click credit. You want to know which spend would have happened anyway, with confidence intervals, on your existing GA4 history, for €99. No pixel, no session metering, no quote process.
Zero pixel install, no per-seat or per-session metering, no quote process. A €99 credit-card read versus a vendor quote on usage tiers.
The questions buyers ask about us vs Cometly.
- Is Causality Engine a Cometly alternative?
- For the incrementality question with confidence intervals, yes, and a no-pixel one. For Stripe-tied MRR or LTV attribution on subscription businesses, Cometly is purpose-built.
- Do I need the Comet Pixel installed?
- No. We run on your existing GA4 and Shopify export. Nothing on your pages.
- Can I run both?
- Yes. Many brands use a pixel-based MTA tool for in-platform optimization and Causality Engine as the independent causal check on budget reallocation.
Every causal vs MTA tool in one row each.
They track clicks. We measure cause. Four of these five tools are pixel or multi-touch-attribution dashboards on an annual contract; they reassign credit for conversions that already happened, and they need a script installed and maintained. Causality Engine measures incrementality, the sales a channel actually caused, from your existing GA4 and Shopify export, no pixel, with confidence intervals, for €99 a read. Different question, different bill, different install.
| Tool | Core method | Causal? | Pixel / SDK? | Time to value | Pricing model | Yr-1 fully loaded | Contract |
|---|---|---|---|---|---|---|---|
| Causality Engine | Causal inference (Bayesian) on GA4 + Shopify | Yes, native | None | 5–10 min | €99 per read · €299/mo Pro | €99 one-time · €3,588/yr Pro | Credit card, cancel anytime |
| Triple Whale | Pixel + MTA (Clicks & Deterministic Views) | No | Yes (Triple Pixel) | Days (after pixel install and data) | Subscription, GMV tiers | €600–1,500/mo loaded | 12-month minimum |
| Northbeam | ML MTA + MMM + incrementality (2026 add-on) | Partial (newer layer) | Yes (script + UTMs) | Weeks (onboarding) | Subscription, mostly quote | €1,500–2,500/mo | 12-month minimum |
| Rockerbox | MTA + MMM + incrementality (enterprise) | Yes (native) | Yes (integration) | Weeks (config + experiments) | Quote only | €2,000–4,000/mo + onboarding | 12-month minimum |
| Hyros | Server-side click tracking + MTA | No | Yes (watcher scripts, heavy) | 2–12 weeks (setup) | Subscription, demo-gated | €500–5,000/mo by spend | Annual standard |
| Wicked Reports | First-party click MTA (LTV focus) | No | Yes (pixel + CRM/UTM) | Days to weeks | Subscription, by contacts | €550–1,200/mo + integration | Annual standard |
| Cometly | MTA pixel + server-side + CAPI | No | Yes (Comet Pixel + CAPI) | Days (post pixel install) | Quote-only, usage-based | Reported from ~$150/seat/mo | Annual or quote |
| Billy Grace | Deep-learning MTA + Unified Marketing Measurement | Modeled, no CIs | Yes (own first-party pixel) | Demo-gated onboarding | Subscription, by ad spend | €499–3,250/mo + €99 integrations | Demo-gated |
| EYKData | Server-side MTA on owned BigQuery (correlation-based) | Quote-only top tier | Yes (GTM + BigQuery + Stape) | Weeks (stack stand-up) | Subscription, by sales | €399–€529+/mo (Advanced = quote) | Subscription |
| Funnel.io | Data integration / ETL platform | Add-on at quote-only top tier | Connectors / warehouse | Weeks (pipeline build) | Flexpoint consumption | $300–600+/mo (Measure tier ≥$500k spend) | Annual |
| Supermetrics | Marketing data pipeline / connectors | No (claims unverified) | Connectors | Hours per source | Per-source subscription | Reported ~$49–299/mo | Annual |
| Elevar | Shopify server-side conversion tracking + data layer | No (not attribution) | Yes (data layer install) | 1–2 weeks (setup) | Subscription, by orders | $225–3,000+/mo + $1k–4.5k install | Monthly |
| Fairing | Post-purchase survey (zero-party) | No (self-reported) | Survey widget | Minutes (install) | Subscription, by orders | Free–$199/mo (reported) | Monthly |
| Google Ads | Self-attributing network, data-driven attribution | No (window-bound, self-mediated) | Native | Built in | Native to ad platform | Free (with the spend) | Native, no contract |
| Meta Ads Manager | Self-attributing, 7-day click + 1-day view default | No (view-through inflates) | Native + Meta Pixel/CAPI | Built in | Native to ad platform | Free (with the spend) | Native, no contract |
| TikTok Ads Manager | Self-attributing, 7-day click + 1-day view | No (passive-feed view-through) | Native + TikTok Pixel | Built in | Native to ad platform | Free (with the spend) | Native, no contract |
| Shopify Marketing Reports | Last-click (last non-direct), rules-based | No (erases assists) | Native | Built in | Included with Shopify | Free (with the plan) | Native, no contract |
| GA4 | Data-driven attribution, click/visit-based | No (ignores impressions, no control group) | Native GA4 tag | Built in | Free | Free | Native, no contract |
Prices reflect publicly-published tiers or industry-standard fully-loaded estimates as of 2026-06. Not vendor quotes.
Run the side-by-side. Upload your GA4 export, get incremental ROAS with confidence intervals in 5–10 minutes, €99. Refundable if the first read doesn't pay for itself in one reallocation decision. Keep your current tool; use us as the independent causal second opinion.
We're the only one in this table without an ad budget, or a dashboard subscription, to protect.
The math behind your marketing.
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