11 Best Shopify CRO Agencies in 2026 (USA): Pricing, Criteria & Red Flags

The best Shopify CRO agency is the one that does research, runs statistically sound A/B tests, and builds and ships the winning variant on Shopify itself, rather than handing you a slide deck. Below are 11 agencies worth putting on a US shortlist, the criteria we used, what they typically cost, and the questions that separate real experimentation programs from redesign shops. Disclosure: we're a Shopify CRO agency and we include ourselves, clearly labelled. Everything else is based on what each agency publishes about itself as of October 2026.

What does a Shopify CRO agency do?

A Shopify CRO agency raises the share of your store's visitors who buy, and ideally the revenue per visitor, through a repeatable loop: research (GA4 funnel analysis, heatmaps, session recordings, polls, review mining, user testing), a prioritised hypothesis backlog, A/B tests run to a pre-set sample size, and shipping the winners into your theme permanently. Read our explainer on what conversion rate optimization is for the fundamentals.

What makes it *Shopify* CRO is the platform physics. Tests have to work with Online Store 2.0 themes, sections and metafields. Apps compete for the same page elements and slow it down. The checkout can only be changed and tested on Shopify Plus through checkout extensibility (Checkout UI Extensions, the Branding API and Shopify Functions). A generalist CRO agency can recommend changes. A Shopify CRO agency should be able to build them without breaking your theme.

How we evaluated these agencies

We didn't take paid placements and we didn't rank on self-reported lift percentages, which can't be verified. We looked at what each agency publishes about its own method and offer against six criteria that matter to a Shopify buyer:

• Shopify depth: theme and app experience, Shopify Plus checkout extensibility, Partner status.
• Research before testing: quantitative and qualitative research feeding a prioritised backlog (ICE, PXL or revenue-based), not best-practice guesses.
• Testing discipline: pre-registered sample sizes, no peeking, losing tests reported.
• Implementation: who builds the variant and ships the winner, in-house or "your developer".
• Revenue metrics: reports revenue per visitor (RPV), AOV and incremental revenue, not just conversion rate.
• Commercial clarity: published price ranges, contract length, guarantees or pay-on-results.

The 11 best Shopify CRO agencies (2026)

1. Conversion: Shopify-only CRO that builds and ships the winning variant

Conversion. We wrote this guide, so judge this entry accordingly. Conversion is a San Francisco based Shopify CRO agency and Shopify Plus Partner. The difference we'd point to is that research, test design, statistics and the Liquid/React build all sit with one in-house team, so winning variants ship the week they validate rather than joining a dev backlog. Checkout extensibility testing on Plus, month-to-month terms and a pay-on-results option.

• Best for: Shopify and Shopify Plus DTC brands with enough traffic to test that want one team to research, build and ship.
• Watch out for: Shopify only. If you also run Magento or BigCommerce storefronts, a platform-agnostic agency fits better.

2. craftberry: Mid-market and enterprise Shopify CRO with a revenue guarantee

craftberry. craftberry positions its CRO service at mid-sized and enterprise Shopify brands and publishes its terms: retainers from about $3,500/month (research plus 3 to 5 A/B tests), and a guarantee of at least a 10% lift in revenue per visitor within 90 days of the first test, or they keep working for free. It says it is built for brands doing $2M+ in revenue or 1,000+ orders a month, and it is the agency that shows up most often at or near the top of third-party roundups in this space.

• Best for: Established Shopify and Shopify Plus brands that want a guarantee written into the engagement.
• Watch out for: Read the guarantee terms closely: what baseline, what time window, and what happens if it is missed.

3. Blend Commerce: Specialist Shopify CRO for DTC: conversion, AOV and repeat purchase

Blend Commerce. Blend Commerce describes itself as a specialist Shopify CRO agency for DTC brands, working on conversion rate, average order value and repeat purchase rather than conversion rate alone. It appears on more "best Shopify CRO agency" lists than almost any other firm.

• Best for: DTC brands that care about AOV and retention as much as top-line conversion rate.
• Watch out for: No public pricing. Engagements start with a paid audit and insights roadmap before a retainer.

4. Shero Commerce: Data-backed CRO and A/B testing from a full-service Shopify agency

Shero Commerce. Shero is a full-service Shopify agency whose CRO practice leads with UX audits and A/B testing focused on checkout friction. Currently the top organic result for "shopify cro agency" in the US.

• Best for: Brands that want CRO, retention and development under one roof.
• Watch out for: Full-service agencies can blur CRO with redesign work. Ask how many live A/B tests they ran last quarter.

5. Netalico: Shopify CRO for mid-market and enterprise DTC brands

Netalico. Netalico runs A/B testing, UX and conversion work for mid-market and enterprise DTC brands on Shopify, with an in-house team working US hours. It publishes a retainer range of $2,700 to $10,000/month (about $4,500 on average) and targets brands doing $2M to $50M GMV.

• Best for: Mid-market brands already on Shopify Plus that want a dev-capable CRO partner.
• Watch out for: Confirm who owns the research phase, and whether tests are designed in-house or by a partner.

6. SDG: Audits, customer research, A/B testing and senior development

SDG. SDG's Shopify CRO service combines audits, customer research, A/B testing and senior developers who implement the fixes. The pitch is: find the friction, then build the fix.

• Best for: Brands that want research-led recommendations plus engineering to implement them.
• Watch out for: Ask for an example test log so you can see how they call winners.

7. CRO Media: Shopify audits, UX fixes and testing for DTC brands

CRO Media. CRO Media is a Shopify CRO agency for DTC brands with the most transparent productised pricing we found: a $2,899 CRO audit (25+ page report in 5 to 7 days) and a $4,200/month per-store retainer, cancel anytime.

• Best for: DTC brands that want an audit-first engagement with a clear UX fix list.
• Watch out for: Check how much of the engagement is implemented versus delivered as recommendations.

8. Oddit: Fixed-fee conversion reports and dev-ready designs, no retainer

Oddit. Oddit sells CRO as a product rather than a retainer: an Essential report at $2,250 one-time (10 redesigned sections) or Pro from $1,750 per page, delivered as dev-ready Figma designs. You can try one free section redesign.

• Best for: Smaller stores and teams with their own developer who want expert redesign recommendations at a fixed cost.
• Watch out for: Recommendations are not A/B tested by Oddit. Your team implements them, and you have to measure the lift yourself.

9. Speero: Research-heavy experimentation programs for larger brands

Speero. Speero is an experimentation agency with deep research and testing methodology. It isn't Shopify-only, but it works with larger ecommerce brands and is strong on program design and prioritisation.

• Best for: Larger brands that want a mature experimentation program and have their own dev capacity.
• Watch out for: Platform-agnostic, and priced for larger budgets. Smaller Shopify stores may be out of range.

10. The Good: Long-running ecommerce CRO and digital experience optimization

The Good. The Good is a long-established ecommerce CRO firm covering research, testing and digital experience optimization across ecommerce platforms, Shopify included.

• Best for: Ecommerce brands that want a seasoned research and testing partner.
• Watch out for: Platform-agnostic. Check that they have Shopify theme and app experience on the team that will run your account.

11. Spiralyze: High-velocity A/B testing using a library of past test results

Spiralyze. Spiralyze runs A/B testing programs informed by a large database of prior tests, with a focus on testing velocity.

• Best for: Higher-traffic brands that want lots of tests shipped quickly.
• Watch out for: Among the more expensive options. A velocity-first approach needs a lot of traffic to pay off.

How much does a Shopify CRO agency cost?

Across the agencies and roundups we reviewed, pricing clusters into three models:

A cheap retainer that only produces recommendations usually costs more than an expensive one that ships, because the backlog piles up waiting for developer time. When you compare quotes, compare cost per shipped, validated test, not the monthly fee. Our Shopify CRO service runs month-to-month with a pay-on-results option.

Is your store ready for a CRO agency?

• Under ~10,000 sessions/month: fix the basics first: speed, PDP clarity, shipping and returns messaging, express payments. An audit is enough. See conversion rate benchmarks by category to sanity-check where you stand.
• 10,000–30,000 sessions/month: research-led CRO. Session replay, user tests and big-swing changes tested sequentially. Classic A/B testing of small tweaks won't reach significance.
• 30,000+ sessions/month: a real A/B testing program pays off, especially on the PDP, collection pages, cart and (on Plus) checkout.
• Shopify Plus, high traffic: add checkout extensibility tests, Functions-driven offers and personalization. This is where a Shopify Plus agency with CRO in-house earns its fee.

Red flags and green flags when hiring

Red flags

• Promises a specific lift before seeing your data or asking about traffic.
• No research phase: jumps straight to best-practice test ideas.
• Calls winners early ("we're at 80% confidence") or can't explain their stopping rule.
• Reports conversion rate alone. A CR win that drops AOV can lose money.
• Recommends a full redesign before running a single test.
• Case studies without a metric, a timeframe or a client name.
• Delivers slides and leaves implementation to "your developer".

Green flags

• Shows you a test that lost and what they learned from it.
• Pre-registers sample size and duration, and reports confidence intervals.
• Builds variants in your theme without app bloat, and ships winners permanently.
• Reports revenue per visitor and incremental revenue per experiment.
• Tells you honestly if your traffic is too low for A/B testing.
• Coordinates tests with SEO and paid media so experiments don't break canonicals or ad landing pages. See A/B testing vs multivariate testing.

Questions to ask on the discovery call

1. What would you test first on my store, and why that before anything else?
2. What's your average time from an approved hypothesis to a live test?
3. Who designs and codes the variants: in-house, or contractors?
4. How do you decide a test has won? What's your minimum sample size?
5. Can I see a full test log from a current client, losers included (anonymised)?
6. Which tools do you use (GrowthBook, Convert, VWO, Intelligems, Shoplift), and who pays for them?
7. What access do you need to my store, and do you work on a duplicate (preview) theme?
8. What are the contract length, notice period and any guarantee terms?

Shopify CRO agency vs a Shopify dev or marketing agency

A Shopify development agency builds what you ask for. A marketing agency buys traffic. A CRO agency decides *what* to change using evidence and proves it worked. You often need more than one. The failure mode is a redesign commissioned to fix conversion with no test to show whether it did. If your dev agency builds and a separate CRO agency researches and tests, agree up front who ships winning variants and how fast.