# FunnelFlux vs Keitaro (2026) · Campaign Buyer > Source: https://campaignbuyer.com/compare/funnelflux-vs-keitaro ## FunnelFlux vs Keitaro By [Dana Rourke](/authors/dana-rourke), Lead reviewer. Reviewed by [Campaign Buyer Editorial](/authors/editorial). Updated 25 September 2026\. **Disclosure:**We may earn a commission when you buy through links on this page. It never affects our rankings. ### Quick answer Pick FunnelFlux Pro if you run multi-step funnels and want to see the whole journey as a visual map, would rather run nothing than maintain a server, and want a 14-day trial to prove it on your own traffic first; pick Keitaro if your edge is deep traffic routing across 35+ parameters, you want CAPI and synced ad costs built into every plan, and you will buy a license and run a Linux box to own your data outright. FunnelFlux, from $99/mo. Keitaro, from €40/mo, self-hosted license. ### Side by side | | FunnelFlux | Keitaro | | --------------------- | --------------------------------- | ------------------------------- | | What it is | Cloud visual funnel tracker | Self-hosted tracker and router | | Hosting | Managed cloud, nothing to install | You rent and run a Linux server | | Built around | Visual funnel mapping | Routing and filtering | | Pricing model | Metered by events | Flat license, no event cap | | Free way in | 14-day trial, card required | No trial, buy a license | | Ad-platform sync | S2S to Meta, Google, TikTok | CAPI on every plan | | Cost sync | Via Argosync add-on | Built in, every plan | | Traffic routing | Visual rotators and conditions | 35+ parameters, deepest | | Where your data lives | In FunnelFlux's cloud | On a server you own | | Entry price | $99/mo (2M events) | €40/mo license | If you are down to FunnelFlux Pro and Keitaro, you have narrowed to two trackers that a paid-traffic buyer can trust with the core job: stamp every click, follow it through your landing page to an offer on any domain, catch the conversion on the server, and report which source, lander and offer actually made money. Both fire server-to-server postbacks that survive iOS and privacy browsers, both send conversions back to the ad platforms, and both are built for the affiliate and media buyer rather than the ecommerce store. So this is not a question of one tool tracking and the other not. The split is sharper than usual, because these two are built around different ideas and they run in different places. FunnelFlux Pro is cloud software you log into, and its whole identity is the visual funnel builder: you draw the journey like a whiteboard and read the report per node. Keitaro is self-hosted software you install on your own Linux server, and its whole identity is routing, a filtering engine that splits traffic across 35+ parameters. One asks nothing of you but a subscription; the other asks for a server and gives you total ownership in return. ### The one thing that decides it: a visual funnel or a routing engine Answer this before you compare a single feature. Is your edge seeing and optimizing the whole multi-step funnel, or expressing the exact rule that sends the right visitor to the right page? FunnelFlux Pro is built for the first. You wire landers, offers, rotators and conditional paths together as a diagram, and the reporting is per node, so a leak between the advertorial and the offer page shows up as a number on that step instead of a row buried in a table. For a buyer whose profit comes from grinding a complex flow, that view is the reason to switch. Keitaro is built for the second. Its filtering engine splits visitors to different landers and offers across geo, device, OS, browser, connection and source, deeper and more granular than anything FunnelFlux exposes, and it treats that routing as the product. If your campaigns live or die by the precision of the split, that is the tool. Then there is one practical thing that has nothing to do with features: how you get in the door, and where the software runs after that. FunnelFlux Pro is cloud, with a 14-day free trial, so you can stand it up and prove it on a real campaign in an afternoon with nothing to install. Keitaro is self-hosted with no free trial, so getting in means renting a Linux box and buying a license. For many buyers that difference settles it before the feature list even opens. ### FunnelFlux Pro: draw the funnel, and a trial to prove it FunnelFlux Pro is the tracker for the buyer who thinks in funnels rather than tables. It runs in FunnelFlux's cloud, so there is nothing to install and no server to keep online, and you build your campaign visually: landers, offers, rotators and conditional routing wired together on one canvas, then tracked per node. Its redirects run on a geographically distributed edge, its JavaScript tracking is cookieless so browser privacy settings do not break it, and its server-to-server integrations push conversions to Meta, Google, TikTok and Microsoft when you cannot drop a pixel on the offer. It also tracks lifetime value across funnels and devices, which matters if your media buying feeds an email sequence that pays off weeks later. This site ranks it sixth among trackers. The full [FunnelFlux Pro review](/reviews/funnelflux) covers how it holds up. Its 14-day free trial is the practical edge here. You can build a real funnel, point live traffic at it and confirm the tracking and postbacks before you pay, though note a valid payment method is required to start. Pricing is refreshingly clear: $99 a month covers 2 million events, then $10 per additional million, with no annual contract and the first two custom domains free. The costs are worth naming. Automated ad-cost syncing is not built into the tracker; it comes from a separate FunnelFlux product called Argosync, which carries its own subscription and its own line on the bill, so the true cost of full cost-reconciled reporting is higher than the $99 headline. The flexibility of the visual builder also has a learning curve: the freedom to model any funnel means more setup time than a tool with fixed campaign templates. And its community is smaller than Voluum's or RedTrack's, so when you get stuck there are fewer third-party guides to lean on. The trial is the due diligence that offsets the last one. ### Keitaro: the deepest routing, CAPI on every plan, and no trial Keitaro does the same core job and puts its weight on routing depth and ownership. Its maker, Apliteni, has shipped it for years and says more than 4,000 businesses run it, and the thing those businesses reach for is the filtering engine: it splits visitors across 35+ parameters, by geo, device, OS, browser, connection and source, which goes further than FunnelFlux's visual rotators and conditions. It fires server-side postbacks, sends conversions back to Meta, Google and TikTok through their conversion APIs, and pulls ad spend in for real cost and ROI, and it carries all of that on every plan rather than gating cost sync behind an add-on. It also bundles a landing page editor, custom domains with SSL and bot filtering. For the buyer whose edge is routing logic and who wants to own their data outright, Keitaro is the stronger tool, and on that ground we would take it over FunnelFlux Pro without hesitation. The full [Keitaro review](/reviews/keitaro) goes through the routing depth in detail. Its real costs are the server, the trial and support. It is self-hosted only, with no cloud version, so you rent and maintain a Linux VPS (CentOS 9 or 10 Stream, 4GB RAM minimum) and keeping it fast, patched and online is your job. There is no free trial: you buy a license, with a public live demo and a refund policy as the only way to look first. And when tracking breaks, resolution can be slow. The sharpest critical review reports 502 errors on server-side conversion tracking and inaccurate cost attribution, with support acknowledging the problem but giving no timeline, which for a media buyer means daily lost optimization while it is open. Live chat also runs business hours, roughly 06:00 to 16:00 GMT on weekdays, so an overnight break in your timezone waits for the next window. ### Where the pricing diverges These two do not price on the same axis, so compare them on your real numbers rather than the headline. FunnelFlux Pro is metered: $99 a month for 2 million events, then $10 per additional million, all in its cloud, with the first two custom domains free and $2 a month for each after that. Automated cost sync via Argosync sits on top. Keitaro is a flat license in euros: €40 a month for Individual Starter, €72 for Advanced and €104 for Expert, then €200 and €400 for its Business tiers, with six- and twelve-month terms taking 10% and 20% off, and CAPI and cost sync on all of them. There is no event cap on either, but there is a server you rent, patch and keep online, and that cost never shows on Keitaro's invoice. So the cheaper setup depends entirely on your volume. At a few million events a month FunnelFlux's metered plan is simple and predictable; at very high volume, where $10 per million adds up, Keitaro's flat license plus a capable VPS can come out ahead, if you are willing to run the box. Verify both against your own event count and your own server budget before you commit. ### A third path if you host the funnel yourself Both tools here measure traffic to pages and offers that live somewhere else. FunnelFlux Pro and Keitaro both stamp a click, follow it to a lander and an offer you host on another platform, then catch the conversion as a postback. There is a different way to close the same gap, worth naming because it changes where the data lives. [ElasticFunnels](/reviews/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 the 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 affiliate postbacks to your networks on purchase, refund, chargeback and renewal, the network-attribution job both trackers here do 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 and nothing on sales you run through outside networks. The honest limit that keeps it on its own line rather than in the table above: ElasticFunnels is newer than either tracker 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 FunnelFlux has years of use behind it and Keitaro more than 4,000 businesses and a long, if mixed, support record you can read before you buy. Its reporting covers the funnels it hosts, so a media buyer sending clicks to offers on other people's domains still needs a dedicated tracker like FunnelFlux Pro or Keitaro for that traffic. It is an option for the seller who runs their own pages and checkout end to end, not a replacement for either tracker here. ### Which one for you **You think in funnels and want to try before you buy:** FunnelFlux Pro. The visual builder, per-node reporting and a 14-day trial make it the right call for the buyer whose profit comes from optimizing a complex multi-step flow, with nothing to install. Budget Argosync if you want automated cost sync, and expect a learning curve for the flexibility. **Your edge is deep routing and you want to own your data:** Keitaro. Filtering across 35+ parameters, CAPI and cost sync on every plan from a €40 entry, and a bundled lander editor and bot filtering make it the better fit for a buyer whose campaigns turn on the precision of the split. Live with no free trial and business-hours support, and run the Linux server it needs. **You host your own pages and checkout end to end:** look at ElasticFunnels alongside them, with the newness and thin outside-proof caveats above in mind, and keep a tracker like FunnelFlux Pro or Keitaro for any traffic that closes on domains you do not host. FunnelFlux Pro takes our default pick here, not because it out-routes Keitaro, but because the median reader who reaches this comparison would rather run nothing than maintain a server, wants a free way to prove a tracker on their own traffic first, and thinks about campaigns as funnels to optimize. Its cloud hosting, 14-day trial and visual builder answer all three. On its own turf, a buyer whose campaigns live or die by the exact routing rule and who wants to own their data outright, Keitaro is plainly the stronger tool, and we would pick it every time for that operator. If you are still weighing cloud against self-hosted, [ClickFlare vs Keitaro](/compare/clickflare-vs-keitaro) and [BeMob vs Keitaro](/compare/bemob-vs-keitaro) run that same fork, [Binom vs Keitaro](/compare/binom-vs-keitaro) weighs Keitaro against a self-hosted rival, and you can see where both land in our [best ad tracker ranking](/best). ### FunnelFlux ##### What works * A visual funnel canvas: landers, offers, rotators and conditional routing wired together on one screen * Node-level reporting shows exactly where a funnel leaks * Predictable pricing: a $99/mo base plus $10 per extra million events ##### What to watch * The learning curve is real; the flexibility costs you setup time * Automatic cost sync needs a separate product, Argosync * A smaller community than Voluum or RedTrack, so fewer guides when you get stuck ### Keitaro ##### What works * Self-hosted, so your click data lives on hardware you control and nothing meters your events. The license is flat, not a bill that climbs with clicks, which is the whole reason high-volume pop, push and native buyers pick it over event-priced cloud trackers like Voluum and RedTrack. * Deep traffic routing and filtering. It splits visitors to different landing pages and offers by GEO, device, OS, browser, connection and source ID, across 35+ tracking parameters, so one tool handles the tracker, the routing and lander rotation. * Server-side postbacks and conversion sync on every individual plan. It fires S2S postbacks and sends conversions back to Meta, Google and TikTok through their APIs, and pulls ad spend in so reports show real cost and ROI, not clicks alone. * Support and price are what long-term users praise most. Across Trustpilot the repeated note from people running it for one to several years is fast, knowledgeable help and a low price relative to cloud trackers. * A built-in landing page editor, custom domains with SSL, and bot filtering, so there are fewer separate tools sitting between your tracker, your lander and your offer. ##### What to watch * Self-hosted only, and that is the real cost and the real risk. You rent a clean Linux VPS (CentOS 9 or 10 Stream, 4GB RAM minimum), and keeping it fast, patched and online is your job, not the vendor's. There is no cloud version, so if server operations are not your thing, a managed tracker like RedTrack or Voluum fits better. * No free trial. To try it properly you buy a license, though there is a public live demo and a refund policy. That is more commitment up front than the card-free trials most cloud trackers offer. * When tracking breaks, resolution can be slow. The sharpest critical review reports 502 errors on server-side conversion tracking and inaccurate cost attribution, with support acknowledging the problem but giving no timeline for a fix, which for a media buyer means daily lost optimization while it is open. * A real learning curve. DNS, SSL, Cloudflare settings, server load, PHP-FPM tuning and postback debugging are all on you, and reviewers who like the tool still say the number of settings and reports can overwhelm a beginner. * Live chat runs business hours, not around the clock. Support is online roughly 06:00 to 16:00 GMT on weekdays, so a launch that breaks overnight in your timezone waits until the next window. ### Pricing FunnelFlux: from $99/mo. $99/mo base includes 2M events, then $10 per additional million events. First two custom domains free, then $2 each per month. Monthly, no annual contract. Keitaro: from €40/mo, self-hosted license. Self-hosted only, so on top of the license you rent and maintain your own VPS. Individual plans, billed annually, are Starter €40/mo (1 user, 1 domain), Advanced €72/mo (1 user, 100 domains) and Expert €104/mo (up to 5 users, 500 domains); business plans are Team €200/mo (up to 50 users) and Enterprise €400/mo (unlimited users and domains, branding). It has no free trial: you buy a license, though a public live demo and a refund policy are offered, and 6- or 12-month terms discount 10% and 20%. Pricing verified against each vendor on 2026-09-24\. Check before you buy. Our pick ### FunnelFlux FunnelFlux Pro is the pick if you run multi-step funnels and want to see the whole journey as a map instead of a table of clicks. [Visit FunnelFlux (opens in a new tab) ](https://funnelflux.com/?utm%5Fsource=campaignbuyer.com&utm%5Fmedium=affiliate&utm%5Fcampaign=comparison) ### Frequently asked questions FunnelFlux or Keitaro: which should I use? Pick FunnelFlux Pro if you run multi-step funnels and want to see the whole journey as a visual map, would rather run nothing than maintain a server, and want a 14-day trial to prove it on your own traffic first; pick Keitaro if your edge is deep traffic routing across 35+ parameters, you want CAPI and synced ad costs built into every plan, and you will buy a license and run a Linux box to own your data outright. Which is cheaper, FunnelFlux or Keitaro? FunnelFlux starts at $99/mo and Keitaro at €40/mo, self-hosted license. But they scale on different axes: FunnelFlux Pro bills $10 per extra million events on top of the $99 base, all in its cloud, while Keitaro's license is flat with no event cap and adds a Linux VPS you rent and run yourself. Count your real event volume and your server cost before you choose. Do FunnelFlux Pro and Keitaro do the same job? Broadly yes, which is why the choice is about how you work and where the software runs rather than what it tracks. Both are trackers for paid-traffic buyers: both stamp a click, follow it through your lander to an offer on any domain, catch the conversion on the server, fire postbacks to your networks, and report which source and offer made money. The difference is emphasis and hosting. FunnelFlux Pro is cloud software built around a visual funnel builder, with a 14-day trial. Keitaro is self-hosted software built around a deep routing engine, with CAPI and cost sync on every plan and no free trial. Which is easier to try before I pay? FunnelFlux Pro, clearly. It gives you a 14-day free trial in the cloud, so you can build a real funnel, point live traffic at it and confirm the tracking and postbacks before you commit, though a valid payment method is required to start. Keitaro has no free trial at all: you buy a license, with a public live demo and a refund policy as the only way to look first, and you also need a Linux server standing before you can run real traffic. If proving a tracker on your own campaign first matters to you, FunnelFlux Pro is the shorter path. Which has the deeper traffic routing? Keitaro. Its filtering engine splits visitors across 35+ parameters, by geo, device, OS, browser, connection and source, which is more granular than FunnelFlux Pro's visual rotators and conditional paths. If the exact routing rule is the feature you are choosing on, Keitaro is built for it. FunnelFlux Pro answers back on a different axis: it shows the whole multi-step funnel as a diagram and reports per node, which is its own reason to pick it if optimizing the flow is your daily job. Which handles CAPI and ad-cost sync better? Keitaro carries CAPI and automatic ad-cost sync on every plan, including its cheapest. FunnelFlux Pro sends conversions to Meta, Google, TikTok and Microsoft through its S2S integrations, but automated cost syncing comes from a separate FunnelFlux product, Argosync, which has its own subscription. So if you want cost-reconciled reporting built into the tracker at no extra line on the bill, Keitaro has the edge; if you value the visual funnel view more and do not mind adding Argosync, FunnelFlux Pro covers the same ground. ### Sources #### Other sources 5 discussions and reviews read for this page. Quotes are excerpts; open a link to read the original in context. 1. \[ff-home-visual\] [FunnelFlux Pro homepage ](https://funnelflux.com/) Blog, 23 Sep 2026 2. \[ff-home-s2s\] [FunnelFlux Pro homepage ](https://funnelflux.com/) Blog, 23 Sep 2026 3. \[ff-home-pricing\] [FunnelFlux Pro pricing notes ](https://funnelflux.com/) Blog, 23 Sep 2026 4. \[reddit-affmkt\] [Need software that links ad data with affiliate network data ](https://www.reddit.com/r/Affiliatemarketing/comments/c2z5vb) Reddit, 1 Jun 2019 5. \[reddit-ppc\] [Best FB ad tracking software? ](https://www.reddit.com/r/PPC/comments/n213tv/best%5Ffb%5Fad%5Ftracking%5Fsoftware/) Reddit, 1 May 2021 [FunnelFlux review](/reviews/funnelflux) [Keitaro review](/reviews/keitaro) [Best ad tracker ranking](/best) [All head-to-heads](/compare) Written by Dana Rourke Lead reviewer Dana Rourke is the lead reviewer at Campaign Buyer. She owns the tracker and attribution coverage: reading what long-term users report about each tool, checking its documentation and pricing, and verifying prices with the vendor before writing the verdict. Keeping the rankings honest mostly means writing down what the top pick gets wrong, so she does that first. [danar@campaignbuyer.com](mailto:danar@campaignbuyer.com) Last checked 2026-09-25 --- [ Campaign Buyer ](/) Independent reviews of the trackers, page builders, attribution tools and ad-spy software media buyers pay for. Every pick names what it is bad at. [contact@campaignbuyer.com](mailto:contact@campaignbuyer.com) We may earn a commission when you buy through links on this page. It never affects our rankings. © 2026 Campaign Buyer. Independent and reader-supported.