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Our Apps Have Driven
5X AOV | 2X Conversions | $30M+ Additional Revenue
5X AOV | 2X Conversions | $30M+ Additional Revenue
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5.0 (3000+ Reviews)
Shopify Apps
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Getting more people to your store does not help much if too many of them leave without buying. An ecommerce CRO agency helps find where shoppers drop off, understand why it happens, and test ways to turn more visits into sales. In this guide, we compare seven ecommerce CRO agencies based on their research and experimentation methods, ecommerce experience, case studies, implementation capabilities, and client fit.
An ecommerce CRO agency identifies where shoppers drop off and tests changes that can increase purchases. The work typically covers:
The key is that recommendations should come from customer and performance data, not subjective design preferences.
We evaluated the agencies in this guide based on their ecommerce CRO testing methodology, ecommerce experience, published results, testing capabilities, and suitability for different types of online businesses.
We also considered whether each agency can support the practical side of CRO, including research, design, development, experimentation, and reporting. This matters because a strong strategy is only useful if the recommended changes can actually be implemented and measured. Our key criteria included:
How agencies identify conversion problems, develop hypotheses, prioritize experiments, and evaluate test results.
Experience working with DTC, Shopify, subscription, enterprise, and other ecommerce businesses.
Published examples with measurable improvements in conversion rates, revenue, average order value, or other relevant ecommerce metrics.
Whether the agency can move from recommendations to design, development, experimentation, and analysis.
Whether the agency connects CRO work to meaningful business outcomes rather than focusing only on surface-level website metrics.
The agencies below cover different ecommerce CRO needs, from enterprise experimentation and research-led optimization to Shopify development and continuous testing. Some are better suited to established brands with substantial traffic, while others may be more relevant when you need deeper customer research or technical implementation. Consider the ecommerce CRO agency's specialization, methodology, and engagement model alongside your own conversion challenges.
Conversion is a conversion optimization and experimentation agency that works with businesses ranging from growing companies to large enterprises. It runs full-scale experimentation programs covering product, pricing, personalization, and customer experience. Its research-led approach goes beyond improving conversion rates to tackle larger commercial questions, such as increasing order value when customer acquisition starts to plateau.
Experimentation programs, pricing tests, personalization, user research
Gousto was struggling to grow its customer base because it was already at capacity. Conversion's research found that many customers did not know its add-on marketplace existed. By making the marketplace part of the order flow, one test increased ancillary sales by 20%. Five months later, Gousto expanded Conversion's work to subscription acquisition and retention, with the overall program generating an 18x ROI over 18 months. Other ecommerce clients include thortful, Whirlpool, and Dollar Shave Club.
Conversion publishes results tied to AOV and pricing, rather than focusing only on conversion rate. Its approach is best suited to high-traffic businesses with an internal team capable of implementing winning tests.
Invesp is a conversion optimization agency that works with ecommerce businesses on research, testing, analytics, and website optimization. This agency combines CRO strategy with its CRO Catalyst platform, which analyzes more than 70,000 websites to identify patterns from successful experiments. Its team uses those insights to build a testing roadmap, giving ecommerce brands a data-backed starting point rather than making them develop their experimentation strategy from scratch.
Conversion audits, customer research, A/B testing, competitive benchmarking
Catalina Crunch began with a conversion audit before moving into A/B testing on its Shopify store. The program reportedly delivered an 18-20% conversion lift and approximately $900,000 in incremental revenue. For 3M, the initial target was a 30% conversion increase, but the company reached a 50% gain within 12 months.
Invesp also offers a performance-based model where fees are tied to measured lift. If you choose this option, clarify how the baseline, incremental revenue, and attribution are calculated before starting.
SplitBase focuses exclusively on ecommerce and works primarily with eight- and nine-figure brands. Its research-first process is particularly strong for premium DTC and beauty businesses, where understanding customer behavior and paid-traffic landing pages can have a major impact on revenue.
Conversion research, A/B testing, landing pages, research-led redesigns
For Kiehl's, customer research informed a series of cart and checkout tests that reportedly generated about $1.6 million in additional revenue. L'Oréal subsequently brought SplitBase in across YSL Beauty, NYX, Biotherm, and Lancôme. Hyperice achieved a reported 78x ROI from its CRO program, while Dr. Squatch added more than $800,000 in monthly revenue.
L'Oréal's decision to use SplitBase across four brands is a strong signal of its ability to work across large ecommerce portfolios. Smaller brands may be better served starting with a focused research engagement rather than committing immediately to an ongoing retainer.
Conversion Rate Experts focus less on surface-level metrics such as bounce rate and click-through rate and more on whether those metrics connect to revenue. Its process uses extensive customer research to identify why visitors hesitate to buy, then turns those findings into larger, higher-impact experiments.
Customer research, conversion strategy, A/B testing, copywriting
CRE's first phase with DefShop reportedly generated €600,000 in additional annual sales, with some pages converting up to 100% better. SimpliSafe grew approximately five-fold over roughly a year, with its CEO crediting CRE as a significant contributor to that growth. Morphsuits also reported a 63% increase in sales.
CRE is a strong fit for companies willing to consider substantial changes to their website and customer journey. SimpliSafe's experience suggests the agency works best when internal teams are comfortable testing ideas that may significantly change the existing experience.
craftberry combines CRO strategy, design, and development under one team. Its Shopify-focused setup means research findings can move directly into implementation without passing through a separate development partner. The agency primarily works with Shopify Plus brands on store builds, custom functionality, and ongoing experimentation.
Shopify Plus builds, A/B testing, CRO redesigns, custom apps
Moon Nude saw checkout starts fall by half, prompting craftberry to test more prominent reviews, bundles, and a simpler cart-to-checkout experience. Making reviews more prominent reportedly increased revenue per visitor by 23.4%, while the overall conversion rate increased by 14%. For Mi Amante, a product-page upsell increased revenue per visitor by 13.8%.
Its biggest advantage is having strategy and development within the same team. When reviewing its case studies, distinguish between controlled A/B test results and redesign before-and-after comparisons, since the latter may also be affected by seasonality and other external factors.
Speero is a CRO and experimentation agency focused on customer research, analytics, experimentation strategy, and ongoing optimization. It focuses on building the systems, research processes, and internal capabilities needed for sustained experimentation. Its work can include maturity audits, ongoing customer research, program management, and CXL training.
Program management, research, analytics audits, team training
For The Bouqs, cart experiments reportedly generated twice the revenue of its previous in-house testing program within six months. RevZilla added approximately $2 million in annual revenue from a single research finding. Adore Beauty is also among its clients.
Speero is a strong choice for brands that want to build an experimentation capability rather than simply outsource CRO. Smaller ecommerce businesses looking for a handful of quick conversion wins may find its broader program approach more than they need.
CRO Metrics is an Optimizely agency partner that extends experimentation beyond the website into paid media and lifecycle campaigns. This makes it particularly relevant for companies managing multiple brands or channels, where learnings from one experiment can potentially inform campaigns across the wider portfolio.
A/B testing, personalization, paid media and lifecycle testing, Optimizely
Clorox worked with CRO Metrics on experimentation and personalization across five DTC websites, using insights across brands and reportedly generating a 4x ROI. Bombas is another notable client.
Its multi-brand approach is particularly useful for larger portfolios where a successful experiment on one brand can potentially be adapted elsewhere. Clutch reviews indicate engagements can range from approximately $50,000 per quarter to more than $200,000 annually, making it better suited to established businesses with substantial experimentation budgets.
The right ecommerce CRO agency depends on your store size, platform, traffic, customer journey, and primary conversion bottleneck. A high-traffic Shopify Plus store may need a different partner from an early-stage DTC brand.
Before evaluating agencies, identify where conversions are dropping and what your internal team can manage. This helps you assess whether an agency’s expertise, process, and scope match your needs, especially if your goal is to increase conversion rate.
Start with the biggest conversion problem. Low add-to-cart rates can indicate issues with product messaging, merchandising, UX, or trust. High checkout abandonment may point to shipping costs, payment options, or checkout friction.
Traffic and conversion volume also determine which CRO tactics make sense. High-volume stores can support ongoing A/B testing, while smaller stores may get more value from customer research, usability testing, and targeted UX improvements.
Ask agencies how they prioritize CRO opportunities based on your traffic, conversion volume, and business goals. Their approach should reflect your store’s constraints rather than follow a fixed testing roadmap.
A specialist CRO agency focuses on conversion research, experimentation, analytics, UX, and customer behavior. A Shopify CRO agency is a better fit for Shopify and Shopify Plus brands needing platform-specific optimization and development. Full-service agencies combine CRO with services such as SEO, paid media, email, and creative.
Choose based on your team’s gaps, CRO goals, and platform. Ask about the team, scope, testing process, prioritization, and how results are measured.
There is no fixed timeline for ecommerce CRO results. Quick wins can come from fixing clear UX issues, weak product information, or broken conversion paths. A/B tests take longer because they need enough traffic and conversions to produce reliable results.
The timeline depends on traffic, conversion rate, test size, number of variants, and the improvement you are trying to measure. High-traffic stores can validate tests faster than smaller stores. In most cases, CRO works best as an ongoing cycle of research, testing, and iteration rather than a one-time project.
Here are answers to common questions about ecommerce CRO agencies, their services, pricing, and how to choose the right partner.
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