Cometly vs Hyros
Cometly is best for B2B SaaS teams (Stripe- and CRM-native), not primarily ecommerce. Hyros is best for high-ticket products and info products. 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: Cometly uses first-party pixel + server-side tracking and Hyros uses server-side click 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 | CometlyAttribution built for B2B SaaS | HyrosAI ad tracking for high-ticket funnels |
|---|---|---|---|
| Compatible with Causality Engine | It is the layerReads your GA4 export | YesKeep Cometly, add the read | YesKeep Hyros, add the read |
| Pay once, no subscription | Yes€99 per read; Pro at €299 a month is optional | Subscription$750/mo | No public priceQuoted through sales |
| Price stays flat as you grow | Yes€99 a read, whatever your revenue or ad spend | NoPriced on your traffic or events | NoPriced on your revenue |
| Money back if it does not help | YesFull refund within 30 days, no questions asked | Fees are non-refundable1 | Refund requests must be made in writing within 90 days of the first charge2 |
| Method | Causal inference on your GA4 export | First-party pixel + server-side tracking | Server-side click tracking |
| Starting price | €99 once, excl. VAT | $750/mocometly.com/affiliates, read | Custom pricinghyros.com/pricing-ai-tracking, read |
| Pricing model | €99 per read, or Pro at €299 a month | Usage-based on monthly pageviews and quoted on a call, with Core starting at $750/mo; monthly or annual billing; no free trial | One plan with no tiers or add-ons, sized to the revenue Hyros tracks and quoted on a setup call; the pricing page publishes no figure |
| Setup | Upload a GA4 export; results in 1 to 2 minutes | Guided onboarding (no self-serve trial) | Tracking setup via onboarding |
| Best for | Ecommerce brands on GA4 spending on two or more channels | B2B SaaS teams (Stripe- and CRM-native), not primarily ecommerce | High-ticket products and info products |
| How it gets your data | |||
| Needs its own pixel, tag or SDK | NoNothing to install | Yes3 | Yes4 |
| Works with Google Analytics 4 | YesA GA4 export is the input | Not stated | Not stated |
| Native store integrations | Any store that runs GA4Shopify, WooCommerce, Shopware, Magento or a custom build | Shopify, WooCommerce, BigCommerce, Magento / Adobe Commerce, Wix5 | Shopify, WooCommerce, BigCommerce, Magento / Adobe Commerce6 |
| 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 | Not stated |
| Marketing mix modelling | No | Not stated | Not stated |
| Incrementality or holdout tests | NoNo test to run | Not stated | Not stated |
| Post-purchase surveys | No | Not stated | Not stated |
| How you buy it | |||
| Self-serve sign-up | YesUpload at /start | Not stated | No10 |
| Free trial or free plan | First finding freeThe €99 read is refundable within 30 days | No free trial11 | No free trial stated; set-up call with results guarantee12 |
| Billing terms | None for the readPro is billed monthly, cancel any time | Monthly or annual13 | Paid in full or monthly instalments; contract term set in each order (auto-renews)14 |
| Who makes it | |||
| Headquarters | Utrecht, Netherlands | Newtown, United States15 | Not stated |
| Founded | 2023 | 202116 | 201917 |
| 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 | Not stated | Not stated |
| Shopify App Store | No appNothing to install | Not stated | 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. hyros.com/terms: “in order to receive a refund, all refund requests must be placed in writing within ninety (90) days of the first original charge.”
- 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. hyros.com/updates/what-is-hyros: “A small script is placed across the advertiser's website, landing pages, checkout flows, and thank-you pages.”
- 5. cometly.com/integrations: “Shopify … WooCommerce … Track Wix form submissions and store purchases … Pipe BigCommerce orders into Cometly attribution … Track Magento purchases”
- 6. hyros.com/integrations: “Shopify Ecommerce & Checkout WooCommerce Ecommerce & Checkout BigCommerce Ecommerce & Checkout Magento Ecommerce & Checkout”
- 7. cometly.com/pricing: “Both plans include unlimited connections to Meta, Google, LinkedIn, TikTok, Microsoft, Reddit, and Snapchat, including server-side Conversion API.”
- 8. hyros.com/updates/what-is-hyros: “Hyros sends the conversion data back to ad platforms via server-to-server API (Conversions API for Meta, offline conversions for Google)”
- 9. cometly.com/pricing: “Core … Pixel Server-Side Tracking Multi-Touch Attribution Events”
- 10. hyros.com/pricing-ai-tracking: “Your price is sized to what we track for you - so we quote it on a quick set up call, not a table.”
- 11. cometly.com/pricing: “We don't run a free trial because attribution requires CRM and ad-platform setup to be useful.”
- 12. hyros.com/pricing-ai-tracking: “Guaranteed - your ads grow or you do not pay”
- 13. cometly.com/pricing: “Core and Enterprise are both available on monthly or annual billing. Pay annually and save 20%.”
- 14. hyros.com/terms: “Your Payment Schedule may either set forth a one-time payment of your Fees ("Paid In Full Payment Schedule") or monthly installment payments towards your Fees”
- 15. linkedin.com/company/cometly: “Headquarters Newtown, Pennsylvania”
- 16. linkedin.com/company/cometly: “Founded 2021”
- 17. hyros.com/updates/what-is-hyros: “founded by Alex Becker in 2019”
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 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
Where Hyros falls short
- No published price: quoted on a setup call, sized to tracked revenue
- Server-side click tracking misses view-through impact
- Not Shopify-native
- Tracks clicks, doesn't prove causation
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.