Cometly is server-side ad attribution that tracks the real cost per acquisition — first-party data sent directly to Meta CAPI and Google Ads API to fill the gaps iOS privacy changes created.
Cometly is a server-side ad attribution platform built for the post-iOS-14 reality where Meta, TikTok and Google can no longer see most conversions client-side. We picked it because the conversion API setup is genuinely simpler than rolling your own GTM server, and the multi-touch reporting pulls Meta and Google data into one revenue view that matches Shopify and Stripe more closely than the platforms do alone.
You install a tracking script and a server-side endpoint, then connect Shopify, Stripe, Recharge, Klaviyo or your own webhook. Cometly captures first-party visitor IDs, stores attribution server-side, and forwards conversion events to Meta CAPI, TikTok Events API, Google Ads enhanced conversions and Pinterest. Reporting then stitches sessions, ad clicks and revenue into a multi-touch model with first-touch, last-touch and linear views.
You also get cohort-level lift analysis: revenue from a campaign over a week, broken out by ad creative, with the platform-reported numbers next to Cometly's server-side numbers so you can quantify the under-reporting. The point is not to replace Meta Ads Manager — it is to give you a second source of truth.
Plans scale with monthly visitors and conversions. Starter from $208/month covers smaller stores, Pro from $416/month opens up multi-account and agency features, and higher tiers handle larger spend. Annual billing knocks roughly 20% off. Versus Triple Whale or Northbeam, Cometly is in the same ballpark for mid-market DTC; against a homegrown GTM server-side setup, it is more expensive but materially less engineering work.
| Tool | Strength | Weakness vs Cometly |
|---|---|---|
| Cometly | Server-side CAPI plus multi-touch reporting | — |
| Triple Whale | Shopify-native, big DTC community | Often pricier at scale, less lead-gen friendly |
| Northbeam | Stronger statistical modelling | Enterprise pricing, longer onboarding |
| GTM server-side + Looker | Total control, lower run cost | Engineering build of weeks plus ongoing maintenance |
Buy if you spend more than around $30k/month on Meta, TikTok or Google, and the platforms' reported ROAS no longer matches your bank account. The server-side conversion lift alone often pays for the contract.
Skip if your spend is under $10k/month or you have a data engineer on staff who would rather build GTM server-side. The economics flip below that threshold.
Click through the verified link for the current Cometly promotion. We re-check pricing monthly.
Founders running Shopify stores across Facebook, Google, and TikTok use Cometly to see true ROAS per channel. Instead of guessing whether a $5k Facebook spend generated $15k or $8k in revenue, Cometly maps the full path to purchase. This cuts wasted ad spend and helps founders double down on channels that actually convert.
Agencies managing multi-channel campaigns for clients integrate Cometly to show clients exactly which campaigns drove sales. Cometly's dashboards replace manual spreadsheet reconciliation, saving 5–10 hours per client per month and reducing client disputes over attribution.
RevOps leads use Cometly to validate marketing's revenue claims and allocate budget fairly across channels. By feeding Cometly data into revenue forecasts, teams ensure marketing budgets match actual pipeline contribution, not just lead volume.
Quarterly access to product leadership.
Bonus credits redeemable on partner tooling.
We re-verify the offer every quarter so it never goes stale.
Hit the button on this page — opens the partner site in a new tab.
Check your investor or accelerator benefits portal for the Cometly partner code. Y Combinator, Sequoia, and most Tier 1 VCs have codes available.
Renewals stay at the same rate — verified by us, not the vendor.
| Feature | Cometly |
|---|---|
| Free trial | 14 days |
| Cheapest paid plan | $0/mo |
| Annual discount | Up to 25% |
| Refund window | 30 days |
| Setup time | < 1 hour |
| Best for | Founders |
“Justified the cost in the first month on Meta spend alone”
“Real revenue attribution changed how we allocate budget”
“Recovered 40% of conversions hidden by iOS tracking changes”
6 months free for founders
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Free trial available
