FunnelFlux Pro vs Keitaro

What each one actually is

FunnelFlux Pro is a cloud-hosted tracker for performance marketers who buy paid traffic. There is no server on your side; you log into an account. Its whole identity is the visual builder: you map the visitor's journey as connected nodes on a canvas rather than configuring linear campaign tables. "Draw it. Track it." is the homepage line. Under the diagram sits current tracking: cookieless JavaScript, S2S postbacks, and server-side conversions passed back to TikTok, Facebook, Microsoft and Google Ads. One caveat that trips up research: FunnelFlux Original was a self-hosted, one-time-licence product, while FunnelFlux Pro is the cloud product under active development, so old forum threads praising a self-hosted licence describe the original, not what you buy now.

Keitaro is a self-hosted click tracker you install on your own Linux server. You route your campaign links through it, and on top of tracking clicks, cost, conversions and ROI it does the media buyer's daily job: it distributes traffic across landing pages and offers by rules you set, on GEO, device, browser, operator and schedule, with offer and lander rotation, A/B tests, server-to-server postbacks and bot filtering built in. The vendor tells you to choose self-hosting for maximum control, privacy and growth. It is a traffic-distribution system first and an attribution layer second.

The split that decides it: do you run your own server?

These two do the same core job and answer to two different operators, and the question that sorts them is whether you want a server in your life. FunnelFlux Pro is a managed account: there is nothing to host, you sign up and start, and the vendor keeps it running. Keitaro is software you own and operate: it lives on a VPS you rent and maintain, and everything that server needs is your responsibility.

That one decision drags the rest along with it. Ownership of your data, the shape of the bill, how much technical work you take on, and how the cost behaves as your click volume grows all follow from it. Get the server question right and the rest of the comparison mostly answers itself.

What FunnelFlux Pro does that Keitaro does not

FunnelFlux Pro's strongest card is the one thing a plain click tracker does not do: let you map a funnel as connected nodes. Traffic source to prelander to quiz to a conditional split to two different offers, with upsells and email steps hanging off it, drawn as a diagram you can read for where people enter, where they drop and which node earns. For a branching funnel with several steps, that turns a spreadsheet of campaign IDs into a picture, and it is the reason most buyers running complex funnels reach for a FunnelFlux Pro account. It also closes the paid-social loop cleanly: conversions pass server-side to TikTok, Facebook, Microsoft and Google Ads, and cookieless JavaScript keeps tracking where browser privacy rules break redirect pixels. And it is the lower-commitment start: a 14-day full-access trial, with nothing to host.

Keitaro syncs conversions to Meta, TikTok and Google too, and it is a capable tracker, but there is no visual builder and no free trial: you buy a licence and then set it up on your own box.

What Keitaro does that FunnelFlux Pro does not

Keitaro gives you a real traffic-distribution engine, bot filtering, and the data behind it. You can rotate landers and offers, cap and auto-disable the losers, bind clicks to the best offer in real time by GEO, device, browser and schedule, and read fast multi-level reports across more than 35 parameters, with bot and proxy filtering built in rather than bolted on. Because it is self-hosted, the click and conversion data sits on hardware you control, with retention you decide rather than a cloud plan's limits. And the licence does not climb with your clicks: individual plans are a flat EUR 40 to 104 a month, with no per-event cap, so a campaign that suddenly does volume never trips an overage fee.

FunnelFlux Pro is priced on events, so at very high volume the meter is the thing you are trying to escape, it has no built-in cloaking or anti-fraud kit, and it cannot give you the raw data on your own box. That is the exact gap the Keitaro tracker fills, and it is close to the trade you weigh in FunnelFlux against the self-hosted Binom.

Setup and who runs it

This is the other hard divide. Keitaro is yours to run. Its docs want a clean VPS on CentOS 9 or 10 Stream with KVM, 20 GB of SSD and 4 GB of RAM or more, and the domains, SSL, backups, updates and security are your responsibility. A media buyer who already runs a server will find that a fair trade for owning the data and escaping the meter; if a tracker you host is the direction you are leaning, the alternatives to Keitaro are worth a look first. A solo operator who does not want a server will not. FunnelFlux Pro is the opposite: you sign up, there is no box on your side, and the trade for that convenience is a bill that grows with your events plus the separate Argosync tool if you want real-time cost sync from Facebook and native. Which trade is the right one is the whole decision, and it is the cost picture we look at next. Neither tool, note, fixes a weak offer, a broken pixel setup or low Event Match Quality. They make the numbers clearer; they do not make the funnel better.

FunnelFlux Pro is a cloud subscription priced on events. One base plan is $99 a month and includes two million events, where an event is any tracked click or internal action. Go over and each additional million events is billed at $10, so the bill grows with volume. Billing is monthly with no annual contract, cancel anytime; the first two custom domains are free and each one after that is $2 a month. The 14-day trial gives full access but needs a valid payment method to start.

Keitaro publishes a flat licence that ignores your click count. Individual plans are billed yearly at EUR 40 (Starter), EUR 72 (Advanced) and EUR 104 (Expert) a month, with Team and Enterprise higher, and Keitaro lists discounts for paying six or twelve months up front. There is no free trial, only a public live demo, and the Linux VPS you host it on is a separate ongoing cost on top of the licence.

The cost decision follows the server decision. At a low or moderate event count FunnelFlux Pro is both cheaper on paper and far less work, because there is no server in the bill. Push enough clicks that per-event pricing turns into a four-figure monthly line, and Keitaro's flat licence plus the cost of running a box is the cheaper of the two, provided you can run the box. Estimate the monthly events you expect, add the server if you are pricing Keitaro, and compare the two totals before you commit.

Prices read from each vendor's own pricing page, current as of 24 September 2026.