7 Best Ecommerce CRO Agencies for DTC Brands (2026)

If you run a DTC ecommerce brand doing $10M or more a year, choosing a CRO agency is a high-stakes decision. You're not shopping for a testing tool. You're choosing a team that will touch your on-site experience, your conversion funnel and, ultimately, your revenue per visitor.

The wrong partner can set your brand back months, while the right one compounds growth quarter after quarter. We've seen established brands turned into discount machines by agencies that applied the same playbook they use for SaaS signups and lead-gen funnels, chasing quick conversion wins that cheapen the look and feel you spent years building.

Most comparison lists judge CRO agencies on surface credentials: years in business, number of tests run, logo walls. None of that tells you whether an agency will produce compounding revenue gains for your brand. This guide compares seven ecommerce CRO agencies and managed CRO services on what actually matters at your scale: research methodology, ecommerce specialization, testing rigor and brand alignment. It also covers what subscription brands should look for, the red flags that predict a failed engagement, and what to expect on pricing.

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Quick guide: the 7 best ecommerce CRO agencies

1. SplitBase: Best overall for 8- and 9-figure DTC ecommerce brands
2. Invesp: Structured program with a proprietary conversion intelligence platform
3. Conversion: Enterprise experimentation at global scale
4. Speero: Behavioral-science experimentation for SaaS and ecommerce
5. The Good: Structured maturity assessment for SaaS and DTC
6. Spiralyze: Predictive testing built on A/B test data from 78,000+ websites
7. KlientBoost: CRO integrated with paid media management

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How we evaluated these agencies

Evaluating CRO partners at this revenue tier takes more than asking how many tests they've run. We weighed each agency on six criteria, and you can run any shortlist through the same checklist:

• Research methodology. Does the agency start with customer research and data analysis before building a test? Ask them to walk you through their research process, with named deliverables, before the first test launches. Programs grounded in real buyer psychology produce better hypotheses and fewer wasted test cycles.
• Ecommerce specialization. CRO for a skincare brand is categorically different from CRO for a B2B SaaS signup flow. You need a team that understands product pages, checkout friction, subscriptions, AOV levers and how paid traffic behaves on landing pages, ideally in your category and at your price point. For many DTC brands, subscription optimization (the offer, the buy box, churn and lifetime value) is one of the biggest growth levers on the site.
• Testing rigor. Are tests run to statistical significance, with pre-registered primary metrics and guardrail metrics like revenue per visitor (RPV) and AOV? Agencies that call tests early or peek at results manufacture wins that never replicate.
• Team composition. A functioning program needs strategy, research, conversion design, development and analysis. If an agency can't name who fills those roles on your account, ask who's actually doing the work.
• Brand alignment. At 8 and 9 figures, a lift that comes from off-brand pages (discount banners, cluttered layouts, copy that doesn't sound like you) is a net negative. Every test should look, sound and feel like your brand. Ask how the agency handles a test winner that conflicts with your brand guidelines, and whether it has ever recommended against shipping one.
• Documented results. Named clients, specific metrics and attributed revenue impact, ideally from brands in your category and revenue stage. A percentage lift without a baseline and a timeframe tells you nothing.

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The 7 best ecommerce CRO agencies for DTC brands

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1. SplitBase: Best overall ecommerce CRO agency for DTC brands

Founded in 2015, SplitBase runs conversion optimization and landing page programs for 8- and 9-figure DTC brands, most of them on Shopify. Its whole team works only on ecommerce conversion optimization, so every decision is made through a CRO lens rather than bolted onto a broader marketing retainer.

Programs follow SplitBase's 3Ps methodology:

• Patterns: Before touching your site, the team studies three kinds of patterns: behavioral patterns (how visitors act), voice patterns (what's happening in customers' minds) and resistance patterns (the friction blocking purchases).
• Perception: How your brand looks, sounds, is perceived and is positioned against competitors. Sometimes a site works perfectly but loses customers because competitors look stronger, so every page and test SplitBase builds is brand-aligned and designed to strengthen how customers see you.
• Proof: A/B tests on the business elements that drive outcomes: offers (subscriptions, upsells, bundles), pathways (product discovery, customer journeys, landing pages) and experiences (copy, visuals, layout). On the offer side, that includes testing different subscription, entry and first-time customer offers and measuring their impact on churn and lifetime value, not just the first order.

Each client gets a dedicated pod of seven specialists, including conversion strategists, designers, copywriters, developers and analysts. Test variants are built to production standard inside your design system, so the gap between a winning test and a shipped improvement stays short.

SplitBase also supports its programs with its proprietary SplitBase Intelligence platform. Its agentic monitoring tracks how your brand and your competitors are discussed online, across ads, social media platforms and product reviews, adding social listening and real-time market data to the research process. Those signals help the team spot emerging customer concerns, refine hypotheses and adjust priorities as the market changes.

Results from published case studies:

• Dr. Squatch: more than $800,000 per month in additional revenue from a research-driven optimization program.
• Transparent Labs: In supplements, where claim restrictions trip up agencies that don't know the category, a year-long CRO program followed by a site rebuild grew subscription take rate from 22% to 38%+ and lifted average conversion rate by over 12%.
• Hyperice: $934,000 per month in additional revenue and a 78x ROI from conversion research, landing page optimization and continuous website optimization.

SplitBase engagements average a 6–10x ROI within the first three months. Other clients include Kiehl's, L'Oréal, Amika, ButcherBox, DIFF Eyewear and Laura Geller.

Key services

• Landing page design and optimization: landing pages built for paid traffic to maximize ad ROI
• Full-site A/B testing and conversion optimization across product, collection, cart and checkout pages
• Subscription optimization: testing subscription, entry and first-time customer offers and the buy box, measured on churn and lifetime value
• Conversion-focused Shopify web design that lifts average order value, conversions and revenue
• Conversion research: analytics, usability testing and qualitative deep dives to find friction points and opportunities

Pros

• Research-first methodology grounds every hypothesis in your customers, so learnings build on each other over time
• Ecommerce-only focus since 2015, with published results for Dr. Squatch, Transparent Labs and Hyperice
• Covers the full conversion surface: landing pages, product pages, checkout, subscriptions and cross-sell flows
• Deep subscription expertise, from offer and buy box tests to churn and lifetime value, shown in Transparent Labs' jump from 22% to 38%+ subscription take rate
• Brand alignment is built in: every variant matches your brand's look and feel and is measured on RPV and AOV alongside conversion rate

Cons

• Built for brands doing $10M+ a year, so earlier-stage brands may not qualify
• The DTC and lifestyle focus means B2B SaaS and lead-gen companies need a different specialist
• Research comes first, so the first test launches in week two rather than on day one

Best for: DTC brands on Shopify Plus in categories like beauty, skincare, health and wellness, supplements, fashion and lifestyle, with $10M+ in annual revenue (most often $20M–$100M).

Pricing: Full-service CRO programs run from $8,500 to $15,000 per month.

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2. Invesp: Structured program with a proprietary conversion intelligence platform

Invesp has worked exclusively on CRO since 2006 and runs programs across ecommerce, SaaS and retail. Its SHIP methodology (Scrutinize, Hypothesize, Implement, Propagate) structures each program, from research and hypothesis development through implementation and applying learnings across the business.

Invesp also offers CRO Catalyst, which it describes as a conversion intelligence platform drawing on data from more than 70,000 websites. As with any agency, the useful question is how the team assigned to you applies that process to your business. Tenure alone doesn't establish fit; relevant client work, the named specialists on your account and the program scope do.

Key features

• SHIP methodology: a documented four-stage framework from initial research through company-wide propagation of learnings
• CRO Catalyst: proprietary conversion intelligence software used to spot patterns and opportunities
• Two pricing models: a flat-fee retainer or a performance-based tier

Pros

• Engagements span ecommerce and other business models
• SHIP gives clients a structured, repeatable process from research to deployment
• Published pricing makes it easier to budget before a sales call

Cons

• A cross-industry portfolio doesn't by itself prove experience in your DTC category
• Confirm the proposed scope covers product pages, checkout and subscription optimization, not just landing pages
• Performance-based pricing needs an attribution model both sides trust, since conversion rates also move with traffic quality, promotions and stock levels

Pricing: As of October 2026, its pricing page lists flat-fee programs starting at about $9,000 per month, with a performance-based tier also available.

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3. Conversion: Enterprise experimentation at global scale

Conversion formed in 2022 when Conversion.com and Widerfunnel, two CRO agencies founded in 2007 and acquired by Sideshow Group in 2020 and 2021, combined under one brand. According to its website, it has over 100 CRO specialists across the UK and North America and has helped clients generate over $2 billion in additional revenue.

Conversion focuses on enterprise experimentation programs, and clients named on its website include Microsoft, Toyota, HP and Meta. Its services run from split testing and personalization to product and pricing experimentation and enterprise program consulting, which suits large organizations that want to build internal CRO capability alongside external execution.

Key features

• PIE and The Lever Framework: prioritization models that rank test ideas by potential, importance and ease, and identify the levers that drive user behavior
• Enterprise program consulting: help building in-house experimentation capability and culture, not just running tests
• Liftmap: a proprietary tool for recording, storing and sharing experiment results across teams

Pros

• Capacity to run complex, multi-market experimentation programs at once
• A broad base of enterprise case studies from two long-running agencies
• Program consulting suits organizations planning to bring experimentation in-house

Cons

• Its named clients are mostly enterprise technology and automotive companies rather than lifestyle DTC brands
• An enterprise engagement model may not match the speed growth-stage DTC brands need

Pricing: Not published.

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4. Speero: Behavioral-science experimentation for SaaS and ecommerce

Speero was founded in 2011 as CXL Agency and was renamed and spun off into its own brand in 2020. It builds and scales experimentation programs using its XOS (experimentation operating system), which combines UX research, behavioral science and A/B testing.

Speero serves enterprise and mid-market companies across B2B, SaaS and ecommerce. Its advisory engagements can include team training through custom workshops and self-serve courses on CXL.com, which helps internal teams build experimentation skills alongside agency support.

Key features

• XOS: an experimentation operating system covering research, design, engineering and testing in one structured program
• Behavioral science approach: hypotheses grounded in cognitive psychology and decision science, addressing why visitors behave as they do
• CXL training: advisory engagements can include workshops and CXL.com courses

Pros

• Strong credibility in experimentation methodology, rooted in the CXL community
• Behavioral-science framing adds depth to hypothesis development
• Flexible service models let teams engage at their current experimentation maturity

Cons

• Its primary strength is SaaS and enterprise experimentation, which doesn't always translate to DTC ecommerce
• Less publicly documented work with fashion, beauty or lifestyle DTC brands than with SaaS
• Contract terms aren't published, so confirm the minimum commitment during scoping

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5. The Good: Structured assessment for SaaS and DTC

The Good was founded in 2009 by Jon MacDonald and works with SaaS and DTC brands. It uses its proprietary 5-Factors Scorecard to evaluate a company's optimization maturity before an engagement begins, and its published results include work for Xerox and Autodesk.

Services span UX research, A/B testing, conversion audits and full-funnel optimization, with a structured path from initial assessment to ongoing experimentation.

Key features

• 5-Factors Scorecard: a structured assessment of your current optimization maturity that identifies opportunities before testing begins
• UX research integration: qualitative user research combined with quantitative testing
• Full-funnel scope: the conversion path from landing pages through post-purchase

Pros

• The Scorecard shows where your program stands before you commit to a retainer
• Published work across both SaaS and DTC
• Jon MacDonald's books and speaking make the agency's approach easy to evaluate

Cons

• A dual SaaS and DTC focus splits ecommerce expertise across two very different buyer types
• Its best-known published results (Xerox, Autodesk) come from B2B and SaaS rather than DTC ecommerce

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6. Spiralyze: Predictive testing from a large test database

Spiralyze uses machine learning trained on A/B test data from more than 78,000 websites to predict which changes are most likely to win on a client's site. According to its website, it has a team of 170 A/B testing specialists. It leads with B2B SaaS and also runs a separate ecommerce CRO offering.

Because it starts from patterns in past tests instead of from scratch, Spiralyze says it can take an idea to a live test in one to two weeks.

Key features

• Prediction engine: machine learning that ranks likely winners before a test launches
• Tools included: VWO and Mutiny for testing, plus Hotjar and CrazyEgg for heatmaps, are included in the fee
• Fast launches: idea to live test in one to two weeks

Pros

• A data-informed starting point that reduces early guesswork
• Bundled tools simplify budgeting
• A pilot option lets you test the fit before a longer commitment

Cons

• Predictions trained on aggregate data can miss brand-specific customer psychology that primary research uncovers, so ask how much customer research is included
• B2B SaaS is its primary market, so check for ecommerce case studies in your category
• The flat fee is priced for larger optimization budgets

Pricing: As of October 2026, its pricing page lists a flat fee of $25,000 per month (month-to-month), a performance-based option and a pilot.

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7. KlientBoost: CRO integrated with paid media management

KlientBoost is a performance marketing agency that treats ad creative, targeting and on-site conversion as one system. It reports 250+ active clients, and building and split-testing landing pages is a core deliverable rather than an add-on. CRO sits alongside its paid media, SEO and email services.

Key features

• Integrated PPC and CRO: landing page tests reflect live ad creative and audience targeting
• In-house landing page production: the agency designs and builds variants as a standard deliverable
• Cross-channel reporting: connects on-page changes to paid media metrics like ROAS and CAC

Pros

• One retainer covers paid media and CRO, removing the coordination gap between two agencies
• Fast landing page variants tied to live campaign data

Cons

• CRO is one service among several, so ecommerce-specific depth can vary
• A client base spanning SaaS, DTC and B2B spreads pattern recognition across very different conversion models
• Checkout, cross-sell and post-purchase optimization get less emphasis than landing pages and ad performance

Pricing: Not listed on its site. You fill in a questionnaire to receive pricing options.

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Comparison table

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Why ecommerce CRO needs specialized expertise

The patterns that convert an $80 skincare buyer are completely different from what works in SaaS or lead gen, yet many CRO agencies apply the same playbook across every vertical. That mismatch is the biggest source of failed CRO engagements at 8- and 9-figure brands.

DTC buyers make decisions differently. DTC buyers make emotional, identity-based purchases. A skincare customer isn't just buying a moisturizer; she's buying into a brand promise and a lifestyle signal. Tactics built for SaaS trial signups, like urgency banners, aggressive pop-ups and friction reduction at all costs, actively undermine the brand positioning that justifies a $90 price point.

Brand alignment matters more at 8 and 9 figures. At this scale, how your brand looks, sounds and feels directly shapes your pricing power. A 5% conversion lift that trains customers to expect 30% discount pop-ups is a net negative. A winner in a two-week test window can still be a long-term brand liability, so specialized agencies evaluate results against brand health, not just conversion metrics in isolation.

Category experience separates good advice from dangerous advice. Supplements and FDA-constrained wellness brands face claim restrictions a generalist agency will break without realizing it. Beauty brands with dozens of products across skin tones, concerns and shades need reassurance and skin-match confidence, levers an agency without category experience can miss entirely. During discovery calls, ask for specific friction points the agency has solved in your category, not generic case studies.

What to look for if you're a subscription brand

If most of your revenue rides on auto-ship, subscribe-and-save or membership, you're evaluating for a different job than a one-time-purchase brand is. A generalist agency will optimize your conversion rate, report a win and leave the metric that pays your bills, how many buyers pick the subscription, untouched. Press on three things before you sign.

They optimize for lifetime value, not just conversion rate

Two customers can spend the same on their first order, but one re-orders for a year and the other never comes back. First-order revenue hides the gap that matters most.

The number a good partner watches is the subscription opt-in rate at the buy box: the share of buyers who choose auto-ship over a one-time purchase. Move that a few points and you've changed the economics of the business without touching traffic. Ask a prospective agency what it would measure beyond CVR and AOV. You want to hear subscription opt-in rate, retention and churn by monthly cohort, and lifetime value by entry offer.

The buy box is the surface that decides the outcome

For subscription brands, the buy box on the product page is the funnel. It's where the subscribe-versus-one-time decision happens, yet most agencies leave it alone because it's harder to test than a headline or a hero image. We've seen subscription-first brands arrive after months with another agency with an opt-in rate that hadn't moved a single point.

Ask what they've tested there. Real answers sound like: the default selection, how the discount is framed (a percentage, a dollar amount or a per-day cost), where the subscription option sits relative to one-time, and how flexibility is communicated, since fear of lock-in is a top reason people won't subscribe. "Cancel anytime, skip or pause whenever" often does more work than a bigger discount. Any subscription lift also has to be net-positive after the one-time revenue it eats.

They treat the entry offer as the acquisition strategy

The most common mistake is bolting subscription on as an afterthought: selling once, then emailing a week later to ask the customer to subscribe. By then, most of the lifetime value is gone. A capable partner designs and tests the entry moment itself (an intro pack, a discounted first cycle or a subscription started up front) and judges each one by retention, not just the easiest first sale.

The tooling also has to see profit, not just conversions. Ask any agency how it measures the profit impact of a subscription test. If the answer stops at conversion rate, keep looking.

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Red flags that predict CRO agency failure

"Best practice" test libraries instead of research. Best practices are useful for brainstorming, not as a strategy. What converts a $40 supplement buyer won't necessarily convert a $150 skincare buyer. When an agency pitches a list of tests it has "already validated" with other clients, ask how many are based on research specific to your brand.

A conversion-only focus. Agencies that optimize only for conversion rate create damage that compounds: discount dependency from aggressive pop-ups and urgency tactics, and brand voice stripped out of copy to make it "more direct." The copy wins a two-week test, then slowly makes the brand look and sound like everyone else.

Thin category experience. It shows up most painfully in regulated and high-consideration categories: supplement claims that break FDA guidelines, or urgency tactics that cheapen a luxury or beauty brand in ways your core customer notices immediately. Agencies with real category depth tell specific stories; the rest generalize.

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What a managed ecommerce CRO program should include

A complete program covers five components, and missing any of them caps your results:

1. Customer research: on-site surveys, post-purchase interviews, session recordings and review mining
2. A CRO audit and baseline analysis that maps your full funnel and produces a prioritized roadmap
3. A structured A/B testing program with pre-registered metrics, full business-cycle run times and documented hypotheses
4. Design and build capacity to ship production-quality variants on your platform, not recommendations in a slide deck
5. Revenue-focused reporting that ties test outcomes to RPV, AOV and lifetime value, not conversion rate alone

For a deeper breakdown of each component, see what ecommerce CRO services include and how to evaluate them.

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CRO agency pricing and what to expect

Expect to invest anywhere from the mid four figures to the low five figures per month for experienced CRO expertise at 8- and 9-figure scale. The range reflects differences in scope, team size and research depth. At the lower end, engagements typically include a research phase, test prioritization and ongoing A/B testing with monthly reporting. At the higher end, they add deeper qualitative research, personalization strategy, multivariate testing and more dedicated team resources. SplitBase's full-service programs run from $8,500 to $15,000 per month.

Most CRO agencies work on one of two engagement models:

• Retainer: the standard for ongoing optimization, covering research, testing and reporting each month
• Project: suited to site redesigns, landing page builds or one-time CRO audits, with limited ongoing value unless a testing program follows

What about performance-based pricing? You'll occasionally see "only pay for results" offers, but very few mature CRO agencies work this way, and for good reason. Conversion rates move with traffic quality, ad platform algorithms, seasonality, promotions, stock levels and product mix, so there's no reliable way to isolate exactly how much revenue a test or program created. In practice, performance deals turn every invoice into an attribution debate and can push an agency toward quick wins over durable growth. That's why established agencies, SplitBase included, work on retainers and agree on a clear business case up front instead: a program that should pay for itself several times over within roughly the first 90 days.

Six-month commitments are common because proper CRO needs a research phase before testing begins, followed by test design, implementation and statistical validation. Be cautious with any engagement that skips research and goes straight to a library of borrowed tests. A 15–30% improvement in revenue per visitor in year one is realistic for most 8- and 9-figure brands with a research-driven program. Larger gains usually point to previously neglected optimization rather than exceptional agency performance.

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Questions to ask in discovery calls

The right evaluation starts with your own conversion data, not an agency's sales deck. Before your calls, map your funnel and identify where the largest revenue gaps sit: landing pages, product pages, cart or checkout. Then ask:

• Walk me through your research process before the first test launches. What deliverables will we receive?
• How do you develop test hypotheses? (Listen for a customer research process, not a swipe file of borrowed tests.)
• Tell me about a test that lost. What did you learn, and what did you do next?
• How do you measure impact beyond conversion rate? (RPV, AOV and repeat purchase rate show whether a win actually made money.)
• How have you handled a test winner that conflicted with brand guidelines?
• What conversion challenges are unique to brands in our category?
• What does the first 90 days look like in deliverables and milestones?

Weigh proof points by relevance, not logos. A case study from a brand in your category at your revenue stage is worth far more than an enterprise logo from an unrelated vertical, and a 50% lift on a B2B signup page tells you nothing about a DTC product page.

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Why SplitBase is the best ecommerce CRO agency for DTC brands

SplitBase combines ecommerce-only experience since 2015 with research grounded in each brand's own customers and positioning. Its 3Ps methodology connects that research to structured experimentation on the offers, pathways and experiences that drive revenue, and published programs for Dr. Squatch, Transparent Labs and Hyperice show the results.

The SplitBase Intelligence platform adds social listening across ads, social media and product reviews, so emerging customer concerns and competitor moves feed straight into research and test priorities. Where other agencies spread their expertise across SaaS, B2B and ecommerce, SplitBase goes deep on what matters for DTC: paid traffic landing pages, product pages, subscription and first-time customer offers, checkout friction and cross-sell flows. And your dedicated seven-specialist pod builds every variant inside your design system, so every test looks, sounds and feels like your brand.

If you run a DTC brand at $10M+ and want to see what a research-first CRO program would look like for your site, get your free CRO diagnostic. The team will review your data, identify your highest-leverage opportunities and walk you through how the program works. Or request a proposal.

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Frequently asked questions

What is a managed ecommerce CRO service?

A managed ecommerce CRO service is an ongoing optimization program where an external team runs the full cycle of customer research, hypothesis development, A/B testing and implementation for your online store. SplitBase runs these programs with its 3Ps methodology and a dedicated seven-specialist pod, so learnings compound over time.

Do we need a specialized ecommerce CRO agency or a generalist?

If you're above $10M in revenue and brand perception affects your pricing power, you need ecommerce specialization. Generalist agencies often damage a brand's look and feel by applying B2B or lead-gen tactics. The higher your price point and the more brand-dependent your conversion rate, the more category specialization matters.

How much do ecommerce CRO agencies cost?

Full-service CRO programs for 8- and 9-figure brands generally range from the mid four figures to the low five figures per month, usually on a retainer. The exact investment depends on test velocity, the number of sites and whether design is handled by the agency or in-house. SplitBase's programs run from $8,500 to $15,000 per month.

How long does it take to see results from ecommerce CRO?

SplitBase launches the first test in week two, once initial research and tracking checks are done. Gains compound from there as research deepens and winning tests stack, and SplitBase engagements average a 6–10x ROI within the first three months.

What's the minimum contract length we should expect?

Six-month commitments are common, because proper CRO needs a research phase before testing and enough test cycles to reach significance across several hypotheses. Shorter pilots can make sense to assess fit, but be wary of any engagement that skips research entirely.

What's the difference between a CRO audit and a managed CRO program?

A CRO audit is a one-time evaluation that identifies your biggest opportunities and what to focus on first. A managed CRO program runs the continuous cycle of research, testing, analysis and iteration, so each cycle builds on the last. Many brands start with an audit and move into an ongoing program.

How much traffic does my store need for A/B testing?

There's no universal floor. It depends on your traffic, baseline conversion rate and the smallest lift you'd act on, so run a sample size calculation. If a test would take longer than roughly six weeks to reach significance, you may get more from qualitative research and evidence-based rebuilds than from traditional split testing.

Should we hire an agency that also handles our paid media?

Only if CRO is a primary expertise. Many performance marketing agencies add "CRO services" without the research depth and testing rigor of dedicated specialists. For a side-by-side example of the two models, see SplitBase vs Convertibles, which compares a CRO agency that works alongside your media buyer with one that runs CRO and Google Ads in one retainer.

Can CRO hurt my brand if tests are too aggressive?

Yes. Urgency-driven, discount-heavy or visually cluttered tests can win in the short term while making your brand look and feel cheaper and eroding repeat purchase rate over months. Choose an agency that can describe a time it recommended against shipping a test winner because the brand cost outweighed the conversion gain. SplitBase designs every variant to the standard of "would you be comfortable shipping this permanently?"

What results should we expect from a top-tier CRO engagement?

A 15–30% improvement in revenue per visitor in year one is realistic for most 8- and 9-figure brands with a research-driven program. Larger gains usually mean optimization was previously neglected. Sustainable growth from systematic testing beats one-time spikes from aggressive tactics.