7 Shopify CRO Agencies Worth Watching in 2025

Running a Shopify store is like running a busy shop on the high street. You can have the best products in the window, but if the aisles are cluttered and the checkout is confusing, sales slip through your fingers. That’s where conversion rate optimization (aka CRO) comes in. It’s not about driving more people into your store, it’s about making sure the ones already inside actually buy.

Done right, CRO means fewer abandoned carts, smoother checkouts, repeat buyers, and even happier customers who come back for more. And while you could try to juggle it yourself, CRO agencies do this all day, every day, every week. They know what works, what doesn’t, what’s worth testing, and how to move quickly. Here are seven agencies that are especially strong for Shopify brands. (Yes, the list is global, so there’s something here for everyone.)

Quick Comparison

Here’s a quick table if you don’t have the time.

The Agencies

1. Spiralyze (USA)

Spiralyze is a powerhouse in predictive CRO. Their “engine” crunches data from 78,000+ A/B tests, so they don’t just guess what to change, they know what’s most likely to work. Instead of fiddling with button colors, they redesign entire pages and test them until the numbers prove out.

For Shopify merchants, this means they can optimize entire product detail pages, collections, checkout flows, and even post-purchase funnels with a higher probability of success. Spiralyze stands out because they handle everything in house, design, dev, research, copy, and coding, so your CRO program doesn’t stall while waiting for handoffs between teams. Clients like Workday and Podium have seen 20–50% lifts, with average gains of 38% more conversions in 90 days. That’s the kind of speed and impact that Shopify Plus stores crave.

• Strengths: Predictive testing, in house execution

• Best for: Shopify Plus and larger ecommerce brands

2. Conversion Kings (Australia)

Brisbane’s Conversion Kings is one of the largest dedicated CRO teams in the region down under. Their philosophy is simple: more tests, run faster, stack the wins, and repeat until you dominate. They’re known for test velocity and processes that keep experimentation consistent. It is the kind of thing you want to see if you're expanding an online empire.

For Shopify stores, they can take your existing funnels, from product pages to checkout, and run rapid fire experiments to see what really works. Their client list includes very big brands like Virgin Australia (the airline, not the mobile) and Domino’s, where they optimized booking and ordering flows.

If they can improve processes for airlines and pizza restaurants, they can certainly do the same for your Shopify store.

• Strengths: Big CRO team, structured testing

• Best for: Shopify stores scaling in APAC

3. SplitBase (Canada)

SplitBase is tailor made for DTC brands (that's direct-to-consumer), with a heavy Shopify presence. They go beyond simple A/B testing by starting with deep customer research. They interview users, analyze behaviors, review recordings, and build experiments based on actual customer insights. All in teh same house.

For Shopify merchants, this means they don’t just test random design tweaks, they dig into why customers are hesitating at checkout or what convinces them to subscribe.

They’ve helped Dr. Squatch add $9.6M in revenue and boosted Fontana Candle Co. by 11.3% in conversion rate. They could definite expand your Shopify store revenue.

• Strengths: Customer research, DTC focus

• Best for: Shopify DTC and subscription brands

4. Reap Digital (South Africa)

Reap Digital bridges CRO and performance marketing. They know that Shopify merchants don’t just need beautiful sites, they need ad spend to land on pages that actually convert. Their unique strength is aligning marketing dollars with CRO strategies.

In practice, this means Shopify brands using paid ads can rely on Reap Digital to test landing pages, cart flows, upsell funnels, and even loyalty programs to squeeze more value out of every click. Their case studies highlight 20–30% lifts in checkout completions, directly addressing the pain point of cart abandonment. (And let’s be honest, every Shopify merchant battles cart abandonment at some point.)

• Strengths: CRO + performance marketing

• Best for: Shopify brands in Africa and beyond

5. PurpleFire (Denmark)

PurpleFire is a European CRO agency with serious Shopify experience. They’ve run over 1,000 A/B tests and delivered $250M+ in added revenue for clients worldwide. Their model is all about speed, accountability, ROI, and learning.

For Shopify Plus merchants, PurpleFire can take on ambitious experimentation roadmaps, rolling out multiple tests per week to accelerate learning. They cover everything on your store: from homepage design tweaks to optimized subscription flows, always with a sharp focus on ROI. Their emphasis on quick turnarounds and measurable results makes them a go to for Shopify stores with aggressive growth targets.

• Strengths: Test velocity, ROI measurement

• Best for: Shopify Plus and high volume stores

6. Convertize (France)

If you want a bit more on the psychology side, Convertize blends CRO with behavioral science. Their approach revolves around “nudges” and persuasive design tactics that influence customer behavior without being pushy. For Shopify stores, this can mean designing product pages that naturally encourage add to cart or checkout flows that gently nudge customers to complete their purchase.

They’ve worked with European ecommerce brands to deliver consistent uplifts in conversions, proving that small behavioral tweaks can add up to big results. Shopify merchants looking to grow subscription revenue, increase loyalty, or reduce churn can especially benefit from their psychology driven design.

• Strengths: Behavioral science, persuasive UX

• Best for: Shopify subscriptions and EU brands

7. AWA Digital (UK & South Africa)

AWA Digital takes a research heavy, full funnel approach to CRO. They focus on customer journey mapping, identifying friction points from homepage to checkout, and running structured experiments to fix them. Their reach spans both Europe and Africa, giving them a global perspective on Shopify optimization.

For Shopify retailers, AWA Digital brings the rigor of enterprise level CRO to everyday ecommerce. Their portfolio includes major retailers that saw double digit revenue growth by working with them. If your Shopify store serves multiple regions or runs across borders, their full funnel expertise can make scaling smoother.

• Strengths: Full funnel research, global reach

• Best for: International Shopify retailers

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How We Picked These Agencies

We didn’t just make a random list. We dug into what really makes a Shopify CRO agency stand out. That meant checking for actual Shopify case studies, scanning through client testimonials, reviewing portfolios, speaking to merchants when possible, and looking for agencies that aren’t just talking the talk but showing clear results. We also wanted a good mix of global coverage, since CRO talent isn’t limited to one region. (Yes, there are excellent options outside the US too.)

The criteria we leaned on included:

• Real Shopify case studies or proven DTC ecommerce results

• Ability to handle checkout, product page, funnel optimization, and post purchase flows

• Running structured, repeatable testing programs instead of one off experiments

• Offering research driven insights rather than guesswork or design opinions

• Showing proof through logos, testimonials, revenue numbers, or client stories that back up their claims

In short, we chose agencies that blend creativity with data. Because with CRO, proof is everything.

Before we part

The best Shopify stores don’t just attract traffic, they convert it. Spiralyze brings predictive horsepower, SplitBase knows DTC inside and out, PurpleFire ties everything back to ROI, and AWA Digital delivers structure and research depth.

Results. That’s what matters.

One more thing worth noting: while Shopify runs online, there are still advantages to pairing with agencies in your area. Local partners understand your market context, your customer habits, and sometimes even your competitors. Plus, time zones line up and meetings are easier, which can make collaboration smoother. For some merchants, that local knowledge combined with CRO expertise can be a real advantage.

If you’re serious about squeezing more value out of your Shopify traffic, pick one of these agencies, run a 90 day test, and let the data tell you who deserves a long term partnership. Go get those sales!