CPV Lab Pro vs Cometly

If you are down to CPV Lab Pro and Cometly, the honest starting point is that these two were built for two different jobs, and for two different kinds of company. Both sit somewhere under the word attribution, but they answer completely different questions. CPV Lab Pro is a self-hosted campaign click tracker for paid-traffic affiliates and media buyers: it stamps every click, follows it through a lander to an offer, and tells you which source made money. Cometly is a B2B SaaS revenue attribution tool: it ties ad spend to money that arrived in Stripe and to deals in a CRM. The reader stuck between them is really deciding what they buy traffic for, not which product is better made.

The honest short version. CPV Lab Pro runs on a server you own, prices on unlimited events with no meter, and reads which source, lander and offer made money. Cometly runs in the cloud, meters your monthly pageviews, and ties paid spend to Stripe revenue and a CRM pipeline through the Comet Pixel and server-side events. Which of those two shapes fits how you work is most of the answer.

The one question that decides it: what you buy traffic for

Answer this before you compare a single feature. Do you buy media to offers as an affiliate or media buyer, pushing volume to landers and offers that may live on domains you do not even own? Or do you sell B2B SaaS or a subscription through a longer, sales-assisted funnel that closes in a CRM weeks after the click? If your problem is seeing which source, campaign, lander and offer produced a profit at click-level, across high volumes and any traffic type, that is CPV Lab Pro's problem to solve. If your problem is knowing which campaign produced a trial that became a paying customer weeks later, and getting that signal back to the ad platforms so they optimize toward revenue instead of raw form fills, that is what Cometly is for.

The business model is not a detail here, it is the decision. CPV Lab Pro assumes you run direct-response traffic and want click-level ROI plus your data on your own hardware, which is why it is self-hosted, flat-priced on unlimited events, and built to read profit by source. Cometly assumes a Stripe subscription or a CRM pipeline and a sale that takes weeks, which is why it writes pre- and post-form touch history onto each deal in HubSpot or Salesforce, the part a CRM's own tracking usually cannot see across a long journey. Put a B2B software closed-won question into CPV Lab Pro and it has no pipeline to read. Point high-volume affiliate traffic at Cometly and you are metering a revenue-attribution tool on a job it was never built for. Knowing which of those two sentences describes you settles most of the choice.

CPV Lab Pro: own the data, unlimited events, run the box

CPV Lab Pro is one of the longer-running trackers in the category, run by media buyers for about a decade, with the vendor putting its user base past 3,000 marketers. It is self-hosted on your own Linux server, so you own the data outright, and it prices on unlimited events with no click limits or overage on any plan. That last part is the pitch: a pop, push or native affiliate pushing hundreds of millions of clicks pays the same flat tier as one pushing a few million, and the bill never climbs because a campaign won. It hands you a real campaign instrument too, with cookieless server-to-server tracking that keeps firing on iOS and in privacy browsers, 30-plus data points per click, bot and proxy filtering, and A/B and multivariate testing of landers and offers from inside the tracker. Starter is $57 a month, the Pro tier that adds CAPI and automatic ad-spend cost sync is $97, and one-time lifetime licences let you own the software instead of subscribing.

Two honest cautions keep it from being the automatic pick. Self-hosting is the real cost and the real risk: the cheap unlimited tracking is only as good as the VPS under it, and keeping that machine fast, patched and online is your job, not the vendor's. And its independent proof is thin, at 3.8 on Trustpilot from only 16 reviews, with most public praise living on the affiliate forum afflift rather than the big review sites. Support is the part users rate highest, and the vendor helps with the initial install at no cost, which softens the setup, but a beginner should still budget time for the sheer number of campaign types and settings. We earn no commission on CPV Lab Pro, so there is no affiliate button for it here. The full CPV Lab Pro review covers where its depth pays off and where the setup bites.

Cometly: ad spend tied to Stripe and CRM revenue

Cometly does a narrower and, for a software company, more useful thing: it ties ad spend to money that actually arrived. Its Comet Pixel and server-side events feed Stripe revenue and CRM deal stages into the attribution, so you see which campaign produced pipeline and closed-won revenue, with MRR and LTV attached, instead of trusting Meta to grade its own homework. It runs first, last, linear, U-shaped and data-driven models across a long journey, and it sends deal-stage-aware events back to Meta, Google, LinkedIn, TikTok, Microsoft, Reddit and Snapchat through a server-side conversion API on both plans, so bidding optimizes toward paying customers rather than raw leads. Its G2 record is strong and consistent, 4.8 out of 5 across 36 reviews, with praise clustering on tracking accuracy and fast, human support, and one reviewer reported accurate tracking on over $100,000 a month in ad spend.

The two real caveats are commercial, not technical. Cometly publishes no price and offers no free trial: the Core and Enterprise plans are quoted on a sales call, usage-based on your monthly pageviews, and you commit, or at least pay for onboarding, before you see it run on your own traffic. Some buyers report the quote feels high. The honest workaround is to make the live demo prove the tracking on your real numbers first, because that is the only up-front proof you get. Outside its solid but small G2 record the proof thins out, with Trustpilot at 3.6 and no clear Capterra listing, so the trial you cannot take is exactly the due diligence you would most want. The full Cometly review walks through the setup and the sentiment in detail.

Different jobs, not a better and a worse tool

Underneath the surface, this is not one tool beating another, it is two answers to two different businesses. CPV Lab Pro answers which source, lander and offer made money at click-level, at high volume, with the data on hardware you own, and it can push those conversions back to Meta, Google and TikTok over CAPI once you are on its Pro plan. Cometly answers which campaign produced recurring revenue for a software company, and feeds that signal back to seven ad platforms. Put a solo B2B founder into CPV Lab Pro and they get a fast, deep click tracker with no Stripe or CRM connection to tell them which ad produced a paying subscriber. Point a scaling affiliate's pop or push volume at Cometly and they are metering a revenue-attribution tool, on a cloud they do not control, for a job CPV Lab Pro does flat-priced on their own server.

So the honest tie-break is not features, it is your operation. If you buy media to offers and live or die by click-level ROI and flat costs, the SaaS-first, cloud-metered attribution tool was never going to serve you. If you sell software or a subscription and need a weeks-long sale tied to the deal in your CRM, the self-hosted click tracker has no pipeline to read and no revenue layer to attach. Match the tool to how your revenue actually arrives and the rest of the comparison mostly answers itself.

Where the pricing diverges

Neither of these prices on the same axis, so you are not modeling a crossover point, you are comparing two shapes. CPV Lab Pro tiers by feature and lets you pour unlimited events at any tier: $57 a month to get in, $97 for the Pro plan that switches on CAPI and automatic cost sync, and a lifetime licence if you would rather stop subscribing. That number sits on top of a Linux VPS you rent and keep online, so factor the server in. Cometly does not publish a price at all: its plans are usage-based on monthly pageviews and quoted on a call, so you cannot line its cost up against a competitor before you talk to sales, and there is no free trial to test it first.

Verify both on your real situation. CPV Lab Pro's number is public and flat, but the server it sits on is a real recurring cost and a real operational job, and the CAPI and cost sync you probably came for start on the $97 Pro plan, not the $57 Starter tier, so the real entry price for a modern setup is $97. Push Cometly for a written quote against your actual monthly pageviews, because usage-based pricing climbs quietly as your traffic grows, and confirm what the paid onboarding includes before you commit.

A third path if you host the funnel yourself

Both of these tools measure traffic to pages and offers that live somewhere else. CPV Lab Pro stamps a click and follows it to a lander and an offer you host on another platform, and Cometly reads revenue out of a Stripe account and a CRM that sit elsewhere too. There is a different way to close the same gap, worth naming because it changes where the data lives. ElasticFunnels is a funnel platform for teams running paid traffic that builds the pages and hosts the checkout itself, and keeps its ad-spend and conversion reporting on the same data layer as those pages, the CRM and the sale. Because a sale closes in a checkout it hosts, that conversion is a first-party event it records directly rather than a postback it has to catch, and it fires server-side postbacks to your affiliate networks on purchase, refund, chargeback and renewal, the network-attribution job CPV Lab Pro does for click traffic. It also split-tests page variants under one campaign URL, so a test never resets the ad platform's learning. It starts with a 14-day free trial that takes no card, on plans from $97 a month, plus 0.5% of revenue processed through its hosted checkout.

The honest limit that keeps it on its own line rather than in the table: ElasticFunnels is newer than either tool here, and there is very little independent third-party review coverage to check its claims against, so until you run real volume through it you are largely taking the vendor's word for how its reporting and postbacks hold up. That is what you would expect of a platform this recent, where CPV Lab Pro has a decade of public affiliate use behind it and Cometly a consistent G2 record you can read before you buy. The newness is about the outside proof, not the feature set: the pages, checkout and reporting are usable from day one. And its reporting covers the funnels it hosts, so an affiliate tracking clicks across offers on other people's domains still needs a dedicated tracker like CPV Lab Pro for that traffic, and a B2B SaaS team attributing a sales-led motion that closes in a CRM it runs elsewhere still needs a tool like Cometly. It is an option for the seller who runs their own pages and checkout end to end, not a replacement for either tool.

Which one for you

You buy media to offers as an affiliate or media buyer: CPV Lab Pro. Click-level ROI at high volume, unlimited events that never meter your clicks, and your data on your own server are the right call for pop, push, native and direct-response traffic, and CAPI and cost sync arrive on its Pro plan. Budget the VPS and the setup time, and lean on the 14-day trial to prove it on one real campaign. If you want that depth without running a box, its cloud sibling CPV One removes the server job.

You sell B2B SaaS or a subscription and need ad spend tied to revenue: Cometly. Stripe and CRM revenue attribution, long-journey multi-touch models and server-side conversion feeds to seven ad platforms are the right fit, as long as you can commit without a public price or a free trial and you make the demo prove the tracking on your own numbers first.

You host your own pages and checkout end to end: look at ElasticFunnels alongside them, with the newness caveat above in mind, and keep a tracker like CPV Lab Pro for any traffic that closes on domains you do not host, or Cometly for a software sale that closes in your CRM.

CPV Lab Pro takes our default pick here, not because it out-measures Cometly at Cometly's own job, but because more readers who reach this comparison buy media to offers than sell B2B software. On its own turf, a B2B SaaS or subscription company tying ad spend to Stripe revenue and a CRM pipeline, Cometly is plainly the better tool, and we would pick it every time over a click tracker with no pipeline to read. If you are actually weighing attribution tools for a software business, our Northbeam vs Cometly and Binom vs Cometly comparisons take the next step. If you are choosing between trackers instead, CPV Lab Pro vs AnyTrack and ClickFlare vs CPV Lab Pro are the ones to read, and you can see where CPV Lab Pro lands overall in our tracker ranking and the full list of head-to-heads.