Rockerbox vs Cometly
Rockerbox is best for omnichannel brands with offline spend. Cometly is best for B2B SaaS teams (Stripe- and CRM-native), not primarily ecommerce. If what you need is what each channel caused, there is a third option: a causal read of the GA4 export you already have.
€99 once, excl. VAT. Keep either one; use us as the causal second opinion.
Side by side. Every fact sourced.
Short answer: Rockerbox uses multi-touch attribution, MMM and control-group incrementality testing and Cometly uses first-party pixel + server-side tracking. Causality Engine is compatible with all of them: it installs nothing and reads the GA4 export you already have, so it adds a read of what each channel caused on top of whichever you keep, for €99.
Scroll the table sideways for every column.
| Compared on | Causality EngineThe layer on top | RockerboxOmnichannel marketing measurement | CometlyAttribution built for B2B SaaS |
|---|---|---|---|
| Compatible with Causality Engine | It is the layerReads your GA4 export | YesKeep Rockerbox, add the read | YesKeep Cometly, add the read |
| Pay once, no subscription | Yes€99 per read; Pro at €299 a month is optional | No public priceQuoted through sales | Subscription$750/mo |
| Price stays flat as you grow | Yes€99 a read, whatever your revenue or ad spend | Not stated | NoPriced on your traffic or events |
| Money back if it does not help | YesFull refund within 30 days, no questions asked | Not stated | Fees are non-refundable1 |
| Method | Causal inference on your GA4 export | Multi-touch attribution, MMM and control-group incrementality testing | First-party pixel + server-side tracking |
| Starting price | €99 once, excl. VAT | Custom (enterprise) | $750/mocometly.com/affiliates, read |
| Pricing model | €99 per read, or Pro at €299 a month | Enterprise; pricing not publicly listed | Usage-based on monthly pageviews and quoted on a call, with Core starting at $750/mo; monthly or annual billing; no free trial |
| Setup | Upload a GA4 export; results in 1 to 2 minutes | Enterprise onboarding (integration-based) | Guided onboarding (no self-serve trial) |
| Best for | Ecommerce brands on GA4 spending on two or more channels | Omnichannel brands with offline spend | B2B SaaS teams (Stripe- and CRM-native), not primarily ecommerce |
| How it gets your data | |||
| Needs its own pixel, tag or SDK | NoNothing to install | Yes2 | Yes3 |
| Works with Google Analytics 4 | YesA GA4 export is the input | Yes4 | Not stated |
| Native store integrations | Any store that runs GA4Shopify, WooCommerce, Shopware, Magento or a custom build | Shopify, WooCommerce, Magento / Adobe Commerce5 | Shopify, WooCommerce, BigCommerce, Magento / Adobe Commerce, Wix6 |
| Server-side tracking or conversion APIs | NoIt reads data you already collect | Yes7 | Yes8 |
| What it measures | |||
| Multi-touch attribution | NoCausal attribution: what each channel caused | Yes9 | Yes10 |
| Marketing mix modelling | No | Yes11 | Not stated |
| Incrementality or holdout tests | NoNo test to run | Yes12 | Not stated |
| Post-purchase surveys | No | Not stated | Not stated |
| How you buy it | |||
| Self-serve sign-up | YesUpload at /start | No13 | Not stated |
| Free trial or free plan | First finding freeThe €99 read is refundable within 30 days | Demo only14 | No free trial15 |
| Billing terms | None for the readPro is billed monthly, cancel any time | Annual (12-month term, auto-renews)16 | Monthly or annual17 |
| Who makes it | |||
| Headquarters | Utrecht, Netherlands | New York, United States18 | Newtown, United States19 |
| Founded | 2023 | 201320 | 202121 |
| States EU data hosting | YesPrimary infrastructure in the EU, per our privacy policy | Not stated | Not stated |
| What reviewers say | |||
| G2 | Not listed yet | Not stated | Not stated |
| Capterra | Not listed yet | 4.0 stars (1 review)22 | Not stated |
| Shopify App Store | No appNothing to install | 4.5 stars (12 reviews)23 | 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. cometly.com/terms: “All fees, including subscription fees, overage charges, and Add-On fees, are non-refundable unless otherwise required by applicable law or expressly agreed in writing by Cometly.”
- 2. help.rockerbox.com/article/ok377m98u4-if-i-have-webhooks-can-i-turn-off-the-onsite-pixel: “Rockerbox requires on-site pixels to match your external user identifier to our cookie identifier.”
- 3. help.cometly.com/en/articles/10340439-install-verify-cometly-pixel: “This pixel must be placed in the <head> section of every website that you want to track.”
- 4. help.rockerbox.com/article/lfzrks8dkf-google-analytics-4: “The Google Analytics 4 integration allows Rockerbox to access aggregate reporting from the GA4 Data API.”
- 5. rockerbox.com/integrations: “Ecommerce … Shopify has you covered. … Magento … with Rockerbox's tracking pixel. WooCommerce … delivers pixel-based marketing measurement in Rockerbox.”
- 6. cometly.com/integrations: “Shopify … WooCommerce … Track Wix form submissions and store purchases … Pipe BigCommerce orders into Cometly attribution … Track Magento purchases”
- 7. help.rockerbox.com/article/6lmqnhsp5i-google-conversions-api-capi: “Rockerbox's CAPI for Google Ads allows advertisers to send conversion data directly from Rockerbox to Google”
- 8. cometly.com/pricing: “Both plans include unlimited connections to Meta, Google, LinkedIn, TikTok, Microsoft, Reddit, and Snapchat, including server-side Conversion API.”
- 9. rockerbox.com/plans: “Customizable Attribution Models: Tailor how credit is distributed across touchpoints based on your business needs.”
- 10. cometly.com/pricing: “Core … Pixel Server-Side Tracking Multi-Touch Attribution Events”
- 11. rockerbox.com/plans: “Rockerbox's MMM product makes it easier than ever to leverage this statistical modeling technique”
- 12. rockerbox.com/plans: “Testing: Uncover the incrementality of your marketing with Rockerbox. Our fully managed offering allows you to determine the incremental impact”
- 13. rockerbox.com/plans: “Talk to an Expert … Request a Demo”
- 14. rockerbox.com/plans: “Request a Demo”
- 15. cometly.com/pricing: “We don't run a free trial because attribution requires CRM and ad-platform setup to be useful.”
- 16. rockerbox.com/tc-05.2021-0-0: “This Agreement shall automatically renew for successive twelve (12) month periods at Rockerbox's then current rates”
- 17. cometly.com/pricing: “Core and Enterprise are both available on monthly or annual billing. Pay annually and save 20%.”
- 18. rockerbox.com/privacy: “Rockerbox, Inc. is a marketing attribution and measurement company headquartered at 462 Broadway, New York, NY 10013, USA.”
- 19. linkedin.com/company/cometly: “Headquarters Newtown, Pennsylvania”
- 20. linkedin.com/company/rockerbox: “Founded 2013”
- 21. linkedin.com/company/cometly: “Founded 2021”
- 22. capterra.com/p/177885/Rockerbox-Attribution-Platform: “4.0 (1) … Overall rating Based on 1 user reviews”
- 23. apps.shopify.com/rockerbox: “Rating 4.5 (12)”
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 Rockerbox falls short
- Enterprise-oriented; pricing quoted via sales, not published
- Integration-based onboarding, not self-serve
- Rules-based multi-touch attribution involves subjective weighting
- Incrementality tests need spend held back or shifted while they run
Where Cometly falls short
- Requires the Comet Pixel plus server-side setup
- No free trial, vendor cites required CRM and ad-platform setup
- Pixel, webhook and click-ID setup required per store
- Multi-touch tracking, not causal measurement
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.