While CAC rises and margins get squeezed, we optimize your website so you can still win. From customer insights and A/B tests to landing pages, our 3Ps Method allows you to increase conversions and profits so you can keep scaling ad spend.

+$800,000/month
Additional monthly revenue

+73%
Subscription rate increase that opened up ad budget
78x
ROI on CRO investment
+$273,000/month
Added revenue, lower CAC
+25%
Meta ROAS increase


You test hundreds of ad creatives every month, but what if your website was actually what’s holding you back?
We find where your store loses buyers, then we fix it. On your homepage, product pages, collection pages, offers, cart and checkout, we’ll apply fixes and run A/B tests that will help you hit your growth goals.
Book a Free Discovery Call

Media buyers stop at the click, developers aren’t marketers and your marketers are too busy running marketing. So your store gets a redesign every few years and a few tweaks in between.
A/B testing is a side task for marketing, design or development. It happens when there’s time, but there’s never time.
Tests run for weeks, results come back flat. Launching tests is one thing, but having the right strategy is another.
You launched a new site that looks better, but performance dropped and you don’t know what to do.
Lots of agencies end up launching generic ideas any AI tool could come up with. If there’s no real strategy, you’re playing the lottery.
01
Research, roadmap, design, copy, development, QA and analysis. You get a proactive expert partner who gets it all done, not one that waits for your ideas.
02
Growth stalls when customer acquisition slows down. We combine personalization with A/B testing and landing pages to keep you growing.
03
Every test is measured on what matters: profit and revenue lift, and test-specific metrics such as LTV, conversion rate and AOV.
Most agencies test elements; we solve scaling problems. Every test on your store comes out of our 3Ps Method: Patterns, Perception and Proof.
Before we touch your site, we need to understand three types of patterns that reveal why people buy, and why they don’t:
Behavioral patterns show us how visitors behave.
Voice patterns reveal what’s happening in customers’ minds.
Resistance patterns uncover the friction points blocking purchases.
The most overlooked conversion factor? Brand perception.
Does your narrative resonate with customers? How are you positioned against competitors? How are you perceived?
Sometimes your site works perfectly, but you lose customers because competitors look stronger.
We’re the only CRO agency that puts brand at the core of its optimization methodology. We help you win.
We A/B test the business elements that drive outcomes:
Offers (subscriptions, upsells, bundles) to optimize AOV and LTV.
Pathways (product discovery, customer journey, landing pages) to guide buyers.
Experiences (copy, visuals, layout) that convert your audience.
Book a Free CRO Diagnostic Call

SplitBase Intelligence
SplitBase Intelligence is our proprietary agentic intelligence platform you’ll benefit from as a SplitBase client. It connects to your quantitative and qualitative data sources to help our strategists surface CRO patterns that would otherwise get missed.
Every hypothesis gets refined by customer insights
Thousands of data points allow for more accurate prioritization of tests and help predict potential impact.
Behavioral, quantitative and qualitative patterns feed directly into your roadmap.
Brand-aligned CRO
A winning test shouldn’t make your store look like a template, and it shouldn’t win by ruining your aesthetics.
Every variant and landing page is designed in alignment with your brand, written in your voice and built in Shopify.
“They worked really well with our internal brand marketing teams to make sure we were creating a landing page based on our brand and performance marketing principles.”


Research-led A/B tests and personalizations across your entire funnel, including your landing pages, homepage, PDPs, collections and cart pages, plus offer testing, bundles, upsells/cross-sells, post-purchase and subscriptions.
We build pages for different ad angles and audiences to help accelerate customer acquisition. We’ll test hero-style pages, listicles, advertorials, personalized PDPs, and other creative formats.
When your brand needs a facelift, we help you design a new website that looks incredible and helps you hit your growth goals. With us, you don’t have to choose between beauty and performance: you get both.
From kickoff to testing within 2 weeks.
We start with an analytics and tracking audit, 3Ps customer research, usability testing, heatmaps and session recordings. Your first tests usually go live by week two.
We’ve identified what stops people from converting, and where your website leaks money. Wins, losses and insights from every test shape the next round of tests.
Wins stack up, customer insights compound, and brands get an average ROI of 6–10x by month three. Most brands keep going for 12+ months.
Founders and ecommerce leaders at Shopify brands on what changed after working with SplitBase.

“Improvements in subscription and overall site performance have allowed us to open up top of funnel budgets and invest more in growth.”
+73% subscription rate, and more budget for top of funnel

“The SplitBase team are experts in developing clear conversion strategies that will drive immediate impact for the business. Along with this their attention to detail and thoughtful approach to the UI and UX of our website helped improve our overall conversions.”
78x ROI on CRO

“Working with SplitBase has been a game-changer for us. Their comprehensive redesign of our main landing page boosted our conversion rate and allowed us to scale to new heights.”
+55.3% conversion rate

“The team are CRO specialists, reliable and a lot of fun to work with. SplitBase helped us optimize our new homepage and bundles flow, which has helped increase monthly revenue by $800,000+.”
+$800,000 a month

Plug in your traffic, ad spend, conversion rate and order value to see the potential impact of conversion optimization on your metrics.
Monthly website users *
Conversion rate *
Average order value *
Monthly ad spend *
Slide to set your lift in conversion rate and order value. On average, 15% is realistic.
Monthly revenue increase
+ $81,900
Revenue increase over 12 months
+ $982,800
Blended CAC (ad spend ÷ orders)
$96 → $87
Extra monthly ad spend at today’s ROAS
+ $52,500
Brands usually call us when
A growth target needs more than more ad spend
CAC is over target and spend has stalled
A redesign or replatform didn’t lift conversion
CRO is important, but the team lacks bandwidth
They know they need to do CRO, but don’t know where to start
You do $10M+ a year on Shopify or Shopify Plus
Paid media drives your growth, and CAC is what’s holding spend back
You want one partner that is accountable for results to own research, testing and execution
You’re under $10M a year
You want ad management in the same retainer
You run a B2B or lead-gen site
You expect every test to win
Our fully managed ecommerce CRO program gets you a full suite of experts and a proven methodology refined and tested for over a decade with 100+ DTC brands.
All the depth of a dedicated CRO team, without the time and cost it takes to build one in-house, the generalist agency that treats CRO as a side service, or the solo strategist working without specialists.
Programs start at $8,500/month.
Book a Free CRO Diagnostic CallEvery program includes
A dedicated pod of 7 specialists
Customer, analytics and competitor research
SplitBase Intelligence customer insight platform
Test strategy and a prioritized roadmap
Design and conversion copywriting
Development in your Shopify theme, plus app setup
QA across devices before every launch
Dashboards, reporting and analysis of every test
Designers and developers build what you ask for, but a CRO agency helps you find out what’s actually worth building (and proves it).
What they own
Best for
Watch out for

What they own
Research, test strategy, design, copy, development in your theme, QA and analysis
Best for
$10M+ Shopify brands that want a repeatable testing program
Watch out for
Needs traffic, data and someone on your team to approve tests
Shopify development agency
What they own
Theme builds, custom features, apps and migrations
Best for
Shipping a defined scope of work
Watch out for
Builds what you ask for, rarely tests whether it works
Design agency
What they own
Visual design, branding and site redesigns
Best for
A fresh, beautiful look for your brand
Watch out for
No data or CRO expertise behind the design decisions. Untested, beautiful pages can still hurt performance.
Paid media agency
What they own
Ad creative, targeting and spend
Best for
Scaling traffic to your store
Watch out for
Usually stops at the click, not the conversion
In-house team
What they own
Day-to-day execution on your store
Best for
Brands that can staff every CRO role
Watch out for
Hard to hire research, design, development, QA and analytics at once
Strategy, UX research, design, copy, development, QA and analytics. Every brand gets a full team of senior experts.
And we build and test with the Shopify apps your store already runs on.


Can’t find yours? Bring it to a free diagnostic call.
Book a Free CRO Diagnostic CallUsually, yes. On the same ad spend, more visitors become customers, so each one costs less: a 20% conversion lift cuts CAC by about 17%. For paid landing pages we also test at the ad level in Meta, so you see the effect in your ad account, not just on your site.
Every on-site test is judged on metrics that matter and drive revenue, such as revenue per visitor, conversion rate, AOV, add-to-cart rate, subscription take rate, and LTV. We also measure the revenue and profit uplift generated by every test. Landing pages for paid traffic are also compared inside Meta, where CAC and ROAS are measured. Every test report shows the impact on your KPIs.
It depends on whether your goal is immediate cash flow and subscriber count, or LTV. We’ll optimize for what aligns with your business goals and makes the most financial sense. We test purchase options, incentives, frequency framing, pricing and upsells. In each case, we look at both the immediate performance impact and the cohort-based impact over time, including churn, payback period and LTV. For example, a test that lifts first orders but brings in subscribers who churn isn’t a win.
Programs start at $8,500 a month. Pricing depends on your scope and order volume: the more orders you get and the more landing pages you have, the more tests we can run. We only take on brands where the program can realistically pay for itself, and on average clients see a 6–10x ROI within their first three months.
Programs start with a minimum commitment so tests have time to run, reach a reliable result and compound. We share the exact term in your proposal. About 95% of clients keep working with us after it ends.
It depends on your traffic and order volume. The more orders you get and the more landing pages and funnels you have, the more tests we can launch. We plan the pace in your roadmap and tell you what to expect for your store before we start.
We work with stores doing at least 3,000 orders a month. Below that, tests take too long to reach a reliable result.
Your first tests usually go live by week two. Within 30 to 60 days you’ll have clear learnings and early wins, and on average brands see a 6–10x ROI by month three.
Every test gets a report with the results, key metrics and what we learned, whether it wins or loses. We meet weekly or bi-weekly to review results and plan next steps, and we’re on Slack for questions in between.
Yes. Our designers are in-house and work inside your brand guidelines and design system. If you have in-house designers, we work alongside them or from their files.
No. Your developers keep owning theme builds, features and migrations. We design and build test variants ourselves, in your theme and testing tool, so tests never wait in your dev queue. For CRO clients who need extra development help outside our CRO scope, we can help at a fixed hourly rate.
No need to wait. We often work with brands during a redesign or replatform: we use research and data to guide design decisions, test parts of the new design before launch when we can, and help you avoid a drop in performance.
We build the roadmap around your promo calendar. Landing page and offer tests can run through promos, while tests on checkout and other core flows pause when traffic gets unusual. Before BFCM, we test offers early so you go into November knowing what works.
Two ways. For smaller changes, we run traditional A/B tests within your A/B testing tool, such as Intelligems. For net-new pages or pages targeting new angles, we recommend testing them directly in Meta. While we won’t create the new ads for you, our team will work alongside your team or media buyer to make sure the tests are set up for success.
Yes. We regularly test pricing presentation, bundles, offers and free-shipping thresholds when your traffic allows a reliable result. We plan these tests carefully to avoid unintended effects on customers or operations.
Yes. We test and build on Shopify checkout, and we install and configure the apps your tests need, from page builders like Replo to subscription apps like Recharge or post-purchase apps like Aftersell by Rokt.
Yes. Landing pages are built as editable sections in your theme or in Replo, so your team can change them without us. Pages, tests, code and research stay yours after the program ends.
We build tests to keep your store fast. Variants are built in your theme or in Shopify testing tools like Intelligems, and every launch goes through QA across devices before it goes live.
No. We work with brands on Shopify and Shopify Plus. Some checkout tests need Plus, but everything else works on both.
No. Conversion rates move with many things outside testing, such as traffic quality, promotions, stock levels and product mix, so no one can tie a specific dollar result to a single change. Instead, we only take on brands where our numbers show the program can realistically pay for itself.
Book a free 30-minute CRO diagnostic call to discover your top CRO opportunities and how much more revenue conversion rate optimization could generate for your brand.