# Voluum vs Cometly (2026) · OfferROAS > Source: https://offerroas.com/compare/voluum-vs-cometly ## Voluum vs Cometly By [Marcus Flynn](/authors/marcus-flynn), tracking and attribution editor. Updated 24 September 2026. You are down to two tools that both send conversions back to the ad platforms through a server-side API, so on that surface they look like rivals. They are not really competing for the same job. Voluum is a route-and-rotate media-buying tracker: your paid clicks pass through it, it rotates offers and landers by rule, splits traffic for testing, and filters junk with a built-in anti-fraud kit. Cometly is a revenue-attribution platform, and in 2026 it is built for B2B SaaS, tying ad spend to Stripe revenue and CRM pipeline. The pick turns on one question: are you buying and routing paid traffic to offers, or measuring which ad produced a subscription's revenue? **Disclosure:**We may earn a commission when you buy through links on this page. It never affects our rankings. Pick Voluum if you buy and route paid traffic to offers, landers and stores across native, push, pop and search and want click routing, server-to-server postbacks and a built-in anti-fraud kit; pick Cometly if you run a B2B SaaS business and need ad spend tied to Stripe revenue and CRM pipeline, right through to closed-won ARR. Quick answer **Voluum** is our top pick for most people. For this site's paid-traffic reader, Voluum is the pick. It routes clicks across offers and landers by rule, rotates creatives, splits traffic for testing, reads conversions back through server-to-server postbacks, and filters junk with a built-in anti-fraud kit, on a self-serve plan from about $119/mo. Cometly does none of that routing: it is a revenue-attribution platform that ties ad spend to Stripe MRR and CRM pipeline, and in 2026 it is built for B2B SaaS, quoted on a call with no free trial. The honest catch is that Voluum measures clicks and ROAS, not recurring revenue: it will not tie a subscription's MRR, LTV and closed-won ARR back to the originating ad the way Cometly does, and its Automizer automation and fuller CAPI depth sit on separate, pricier tiers. That gap weighs most on a B2B SaaS operator who needs ARR in the report, which is exactly the reader Cometly is built for. If you buy and route paid traffic to offers and stores you own, Voluum does more. * **Voluum.** Best for Affiliate and native/pop/push media buyers. From $119/mo. * **Cometly.** Best for B2B SaaS teams tying ad spend to Stripe revenue and CRM pipeline. ### Side by side __Feature comparison across 2 tools__ | Tool | Core job | Routes offers | Measures | Best fit | From | | ------- | ------------------- | -------------- | ---------------- | ------------ | ---------- | | Voluum | Track + route | Rotates offers | Clicks & ROAS | Media buyers | $119/mo | | Cometly | Revenue attribution | No routing | Stripe MRR & ARR | B2B SaaS | Not listed | ### Voluum: pros and cons ##### What works * Deep click-routing and traffic-distribution rules by zone, publisher, GEO, device and sub-ID, which a revenue-attribution tool like Cometly does not do at all. * Cookieless tracking and server-to-server postbacks that hold up on redirect-style affiliate flows where browser pixels fail. * The Anti-Fraud Kit flags suspicious traffic automatically, which matters most on native and pop inventory where junk clicks are common. * Cloud-hosted and self-serve from about $119/mo, so you can see a price and start today, where Cometly quotes every plan on a call. ##### What to watch * The automation layer, Automizer, is billed separately from $375/mo on top of the plan, so hands-off optimization stacks the real cost fast. * Full server-side CAPI depth and higher event ceilings sit on the expensive upper tiers ($539 to $1,599/mo). * It measures clicks, conversions and ROAS, not recurring revenue. It will not tie a subscription's MRR, LTV or closed-won ARR back to the originating ad the way Cometly does, so a B2B SaaS finance team will want more. ### Cometly: pros and cons ##### What works * Server-side Conversion API is the genuine strength. Cometly sends deduplicated conversions back to Meta, Google, LinkedIn and TikTok, and reports Meta event match quality up to 9.3 out of 10 where a manual setup sits at 4 to 5\. Buyers on r/FacebookAds confirm it pushed more matched data to Meta than other trackers they had run. * Revenue attribution built around Stripe and the CRM, not just clicks. The native Stripe sync ties trials, new customers, recurring revenue and LTV to the originating ad, and HubSpot and Salesforce lifecycle stages map onto the same touchpoints, right through to closed-won ARR. That is the report a SaaS finance team will actually defend. * Modern data plumbing under it. A cookieless Comet Pixel with cross-device identity, 70-plus native integrations, an Agent you query in plain English, and on Enterprise a warehouse sync to Snowflake or BigQuery plus an MCP server. The vendor puts setup at hours rather than weeks. * Established and reviewed, not a new app. Comet LLC has tracked paid spend for years, with named case studies (ClickFunnels reports a 31% ad-return lift, Trainual a 40% improvement in 90 days). ##### What to watch * It has left the DTC and ecommerce market it once served. Cometly's own site now names Triple Whale as the ecommerce tool and positions itself for B2B SaaS. Shopify still integrates, but reviewers report weaker matching on cash-on-delivery and email-less orders, so a direct-response or ecom brand should demand proof on its own orders before buying. * It is not a route-through campaign tracker. Cometly attributes traffic to your own site and models the SaaS journey; it does not distribute clicks across offers and landers by rule, rotate creatives, split-test traffic or filter fraud the way Voluum does. An affiliate or multi-offer media buyer needs that; a B2B SaaS team pointing paid traffic at one funnel does not. * No public price and no free trial. Every plan is usage-based on monthly pageviews and quoted on a sales call, and Cometly says it does not run a trial because attribution needs setup first. Buyers who want to test against their own numbers before paying, or just want a price before a call, get neither. * Support and journey timing draw the recurring complaints. The long-running r/FacebookAds thread reports support replies measured in business days and trouble seeing the full pre-purchase journey. The sample is small, but consistent enough to test response times and event latency during onboarding. ### The real differences Both tools feed conversions back to the ad platforms through a server-side API, so the mechanism that usually separates trackers does not cleanly separate these two. Voluum carries fuller server-side CAPI depth on its upper tiers; Cometly sends deduplicated conversions to Meta, Google, LinkedIn and TikTok on every plan and reports strong Meta event match quality. If your whole question is whether you can push clean conversions back to the ad platforms, either one can. That is not where they part. They part on what happens to the click. Voluum is a route-through tracker: your paid clicks pass through it, and it distributes them across offers and landing pages by rule, rotates creatives, splits traffic for testing, and reads conversions back through server-to-server postbacks. Its own documentation frames the model plainly: postbacks report conversions server-to-server from an affiliate network, and you use them for offers you source from a third party. It also ships a built-in anti-fraud kit that flags junk traffic automatically, which matters on native and pop inventory. Cometly has none of that. It does not route, rotate or split-test anything. Cometly does something Voluum does not: it ties ad spend to revenue, not just to conversions. Its native Stripe sync stitches trials, new customers, recurring revenue and lifetime value back to the ad, audience and creative that drove them, and HubSpot and Salesforce lifecycle stages map onto the same touchpoints, through to closed-won ARR. That is a revenue report a SaaS finance team will defend, and Voluum, which measures clicks and ROAS, does not produce it. The other thing that changed is who Cometly is for. It used to serve DTC and ecommerce; in 2026 its own site names Triple Whale as the ecommerce tool and positions Cometly for B2B SaaS. Reviewers report weaker matching on cash-on-delivery and email-less orders, so a direct-response or ecommerce brand should demand proof on its own orders before buying. Voluum has not moved: it is still a media-buying tracker for people buying paid traffic across native, push, pop and search, most often to offers they do not own. How you buy them differs too. Voluum publishes self-serve tiers you can size against your event volume and start on today, from about $119 a month, though its Automizer automation layer and fuller CAPI depth sit on separate, pricier tiers. Cometly publishes no price and runs no free trial: every plan is quoted on a call and metered on monthly pageviews. If you want to see a number and test against your own traffic before paying, Voluum lets you and Cometly does not. ### What each one costs **Voluum.** Self-serve and tiered, priced on events, where an event is a tracked visit or conversion. The entry Profit plan lands around $119 a month billed annually, and the ladder runs up through Scale and Agency to Enterprise at $1,599 a month, adding event ceilings, seats and deeper server-side CAPI as you climb. The Automizer automation layer, which shifts budget and pauses campaigns by rule, is a separate add-on from $375 a month. Everything is published, so you can size a plan before you buy. **Cometly.** No public price. Its two plans, Core and Enterprise, are usage-based on monthly pageviews and quoted after a demo, with annual billing about 20% cheaper than monthly and no free trial. Cometly says it does not run a trial because attribution needs setup first. So the cost comparison is really a buying comparison: Voluum shows an entry tier you can size against your event volume, while Cometly requires a call before you see a figure at all. Neither charges a percentage of ad spend, so once you are paying, size the plan against your own traffic. Prices read from each vendor's own pricing page, current as of 24 September 2026. Our pick ### Voluum For this site's paid-traffic reader, Voluum is the pick. It routes clicks across offers and landers by rule, rotates creatives, splits traffic for testing, reads conversions back through server-to-server postbacks, and filters junk with a built-in anti-fraud kit, on a self-serve plan from about $119/mo. Cometly does none of that routing: it is a revenue-attribution platform that ties ad spend to Stripe MRR and CRM pipeline, and in 2026 it is built for B2B SaaS, quoted on a call with no free trial. The honest catch is that Voluum measures clicks and ROAS, not recurring revenue: it will not tie a subscription's MRR, LTV and closed-won ARR back to the originating ad the way Cometly does, and its Automizer automation and fuller CAPI depth sit on separate, pricier tiers. That gap weighs most on a B2B SaaS operator who needs ARR in the report, which is exactly the reader Cometly is built for. If you buy and route paid traffic to offers and stores you own, Voluum does more. ### Frequently asked questions Voluum or Cometly: which should I pick? Pick Voluum if you buy and route paid traffic to offers, landers and stores across native, push, pop and search and want click routing, server-to-server postbacks and a built-in anti-fraud kit. Pick Cometly if you run a B2B SaaS business and need ad spend tied to Stripe revenue and CRM pipeline, right through to closed-won ARR. They do different jobs and sell in different ways, so the answer is usually clear once you know where your revenue lives and whether you route traffic. Do Voluum and Cometly do the same job? No. Voluum is a route-through media-buying tracker: it distributes clicks across offers and landers by rule, rotates creatives, split-tests traffic and filters junk with an anti-fraud kit. Cometly is a revenue-attribution platform that ties ad spend to Stripe MRR, LTV and CRM pipeline for a B2B SaaS business. Both feed conversions back to the ad platforms through a server-side API, but that is the only part of the job they share. Is Voluum or Cometly cheaper? Voluum shows a price and Cometly does not. Voluum publishes self-serve tiers from about $119 a month billed annually, up through Scale and Agency to Enterprise at $1,599 a month, with the Automizer automation layer a separate add-on from $375 a month. Cometly publishes no price: its Core and Enterprise plans are quoted after a demo and priced on monthly pageviews, with no free trial. So you can see where Voluum starts and size it against your event volume, while Cometly requires a call before you see a number. Neither charges a percentage of ad spend. Can Cometly route and rotate offers like Voluum, or does Voluum report SaaS revenue like Cometly? Not really, in either direction. Voluum routes clicks across offers and landers, rotates creatives and split-tests traffic; Cometly attributes traffic to your own site and does not route or rotate anything. Going the other way, Cometly ties ad spend to Stripe MRR, LTV and closed-won ARR, which Voluum's click-and-ROAS reporting does not produce. Buy for the job you actually have: routing paid media, or measuring the revenue a subscription business earns. ### Sources #### Other sources 4 discussions and reviews read for this page. Quotes are excerpts; open a link to read the original in context. 1. \[vol-postback\] [Track Conversions - Voluum Documentation ](https://doc.voluum.com/article/track-conversions) Vendor, 23 Sep 2026 2. \[vol-window\] [Track Conversions - Voluum Documentation ](https://doc.voluum.com/article/track-conversions) Vendor, 23 Sep 2026 3. \[cometly-home\] [Cometly | Marketing Attribution Software ](https://www.cometly.com/) Vendor, 24 Sep 2026 4. \[cometly-stripe\] [Cometly | Marketing Attribution Software ](https://www.cometly.com/) Vendor, 24 Sep 2026 ### How we compared these We do not run paid campaigns through either tool. We read each vendor's own documentation and pricing, verify every number against the source, and weigh the long-term reports of operators who run them at real spend. The full rubric is on the [methodology page](/methodology). ### Related reading * [Voluum review](/reviews/voluum) * [Cometly review](/reviews/cometly) * [Voluum vs ClickMagick](/compare/voluum-vs-clickmagick) * [RedTrack vs Cometly](/compare/redtrack-vs-cometly) * [AnyTrack vs Cometly](/compare/anytrack-vs-cometly) * [Cometly alternatives](/alternatives/cometly) * [Best ad tracking and attribution software](/best) * [All head-to-head comparisons](/compare) --- We may earn a commission when you buy through links on this page. It never affects our rankings. © 2026 OfferROAS. Independent and reader-supported.