7 Best Conversion Rate Optimization Agencies for Ecommerce Brands

Intro

Paid traffic is more expensive, and many Shopify stores still lose buyers between collection pages, product pages, carts, and checkout. That middle of the funnel is where a disciplined CRO partner can often create more profitable growth than another ad budget increase.

I reviewed ecommerce CRO agencies with Shopify and Shopify Plus brands in mind, especially DTC and multi-brand retailers around $3M+ ARR. I favored teams that treat CRO as research, analytics, UX, and implementation. If CRO also supports search, connect funnel findings to broader ecommerce SEO work so qualified traffic lands on pages built to convert.

Key Takeaways

• Ecom Luxx is my top pick for Shopify brands around $3M+ ARR that want a partner to own MoFu execution.
• SplitBase and Speero suit larger teams that need deeper research, Shopify Plus fluency, or experimentation governance.
• The Good and Fuel Made fit enterprise DXO needs or Shopify lifecycle work tied to CRO.
• Inflow and Oddit are practical choices for flexible audits, prioritization, and faster UX direction.

How I tested these ecommerce CRO agencies

Experimentation rigor. I looked for clear metrics, guardrails, prioritization, and confidence thresholds before design changes. I treated A/B testing as controlled experiments with primary metrics and guardrails, not random tweaks.

Middle-funnel coverage. I checked collections, PDPs, cart behavior, offer clarity, merchandising, and checkout constraints.

Platform fit. I also considered how Shopify Plus performance affects theme constraints, app stacks, and implementation speed.

Analytics and research. Strong programs used GA4, Shopify Analytics, heatmaps, surveys, customer interviews, and event instrumentation.

Revenue accountability. I scored agencies higher when CRO tied to revenue per session, AOV, retention signals, and learning velocity.

Ecom Luxx

Ecom Luxx pros

• Shopify-focused CRO, design, development, SEO, and branding support.
• Built for DTC brands around $3M+ in annual revenue.
• Prioritizes research-backed diagnostics before major redesigns or tests.
• Owns MoFu areas like collections, PDPs, and cart flow.
• Connects UX strategy with in-house design and development.
• Supports ongoing testing cadences rather than one-off audits.
• Can support migrations and custom app needs for complex stacks.
• Prioritizes measurable results over deliverable volume.

Ecom Luxx cons

• Boutique capacity makes fit and timing important.
• Best suited to brands with useful traffic and clean data.
• Testing decisions need stakeholder buy-in.

My experience with Ecom Luxx

In my review, Ecom Luxx stood out because, unlike most CRO agencies, it is built to take full ownership of the middle of the funnel for Shopify brands around $3M+, rather than handing back a test backlog.

I liked that research, UX, design, development, and testing cadence sit under one roof. That makes the work less about a stack of deliverables and more about measured changes to pages where shoppers decide.

Ecom Luxx price

Pricing is custom and quote-based. I would judge value by the research, implementation support, and experiment cadence included, not by deliverable count alone.

SplitBase

SplitBase pros

• Ecommerce and DTC CRO focus.
• Programs target CVR, AOV, and LTV.
• Shopify Plus, VWO, Convert, and Intelligems partnerships.
• Uses GA4, BigQuery, Looker, Hotjar, and heatmaps.
• Strong fit for brands with meaningful traffic.

SplitBase cons

• Premium engagements may not suit early-stage stores.
• Research depth can lengthen time to first test.
• Needs enough traffic for reliable experimentation.

My experience with SplitBase

SplitBase feels like a serious research-led CRO partner. I like its mix of analytics, qualitative research, and test strategy for higher-traffic Shopify teams.

SplitBase price

Pricing is custom, usually scoped around traffic, research depth, pages in scope, and test velocity.

Speero

Speero pros

• Strong experimentation-at-scale methodology.
• Covers experimentation, optimization, data, and design.
• Supports ecommerce, DTC, and retail teams.
• Offers governance and documentation workflows.
• Good for mature testing operations.

Speero cons

• Processes can feel heavy for lean teams.
• Not Shopify-exclusive.
• Requires solid analytics discipline from the client side.

My experience with Speero

Speero is the pick I would consider for experimentation maturity. Its value is the system around prioritization, learning, and governance, not just test ideas.

Speero price

Pricing is custom and usually program-based, with roadmaps built around experimentation operations.

The Good

The Good pros

• Long-standing CRO and DXO consultancy.
• Combines research, testing, and implementation.
• Offers A/B and multivariate testing services.
• Strong educational frameworks and playbooks.

The Good cons

• Public guidance points to enterprise-level annual budgets.
• May require client development resources.
• Broader than Shopify-only CRO.

My experience with The Good

The Good fits teams that want optimization tied to executive structure. Its DXO framing keeps attention on the full customer journey, not only isolated page tests.

The Good price

The Good indicates enterprise-level annual optimization budgets, so I would treat it as a larger investment.

Fuel Made

Fuel Made pros

• Shopify ecommerce growth agency.
• Combines design, development, CRO, and Klaviyo.
• Focuses on CVR, AOV, and revenue per visitor.
• Implementation-ready for Shopify UX improvements.

Fuel Made cons

• CRO may share focus with design and email.
• Program details vary by scope.

My experience with Fuel Made

Fuel Made is useful when conversion and retention work overlap. I like the Shopify-first lens and the connection between onsite UX and Klaviyo lifecycle strategy.

Fuel Made price

Pricing is custom, especially when CRO is bundled with design, development, and lifecycle marketing.

Inflow

Inflow pros

• Ecommerce-specific CRO services.
• Personalized programs rather than fixed packages.
• Offers CRO audits tied to business goals.
• Good fit for flexible mid-market teams.

Inflow cons

• Not Shopify-exclusive.
• Depth varies between audit and retainer scopes.
• Implementation may depend on client developers.

My experience with Inflow

Inflow is the practical mid-market option. I like that it starts with business goals and context before pushing a larger testing program.

Inflow price

Pricing is custom for audits and ongoing programs based on goals, traffic, and implementation needs.

Oddit

Oddit pros

• Focused ecommerce CRO and UX audits.
• Shopify-specific service options.
• Typical audit turnaround is 7 to 10 business days.
• Useful for prioritized design fixes.

Oddit cons

• Audit-first, not always an ongoing testing program.
• Best as triage before deeper experimentation.

My experience with Oddit

Oddit is the fastest path here to a sharp outside review. I like it for teams that know the store is leaking but need a clearer fix list.

Oddit price

Oddit offers productized audit options with defined inclusions. Confirm current packages during scoping.

FAQ

These are the questions I would settle before signing a CRO scope.

What does a CRO agency do for Shopify?

It researches user behavior, improves UX and messaging, instruments analytics, and tests key revenue pages.

When is a brand ready for CRO?

You need enough traffic, clean analytics, and a team willing to test hypotheses instead of debating opinions.

How should success be measured?

Track conversion rate, revenue per session, AOV, margin impact, repeat behavior, and learning velocity.

Where should MoFu work start?

Start with high-traffic collection pages, product pages, cart flow, and any step with measurable drop-off.