Convertibles vs SplitBase: Shopify CRO Agency Comparison (2026)
Both Convertibles and SplitBase run CRO programs for established DTC brands. The real difference is scope and platform depth. Convertibles is a Shopify Plus specialist that ships testing, landing pages, speed, dev, and paid media (Google plus YouTube Ads) under one team. SplitBase is a multi-platform CRO agency focused on research-led testing, landing pages, and website redesigns.
This page lays out where each agency fits, where they overlap, and how to pick.
At a Glance
- Convertibles: Shopify Plus only. 8-person team. Agency launched 2023, founding team brings 10+ years of prior Shopify development experience and a successful 8-figure brand exit. Full-stack DTC growth (CRO plus landing pages plus speed plus dev plus paid media). Multi-variation testing default (2 to 4 variants per test). Official Intelligems partner. 33 published case studies with $2.3M+/month in aggregate measured lift.
- SplitBase: Founded 2015 by Raphael Paulin-Daigle. Multi-platform (Shopify Plus, Magento, BigCommerce, WooCommerce). Pricing floor of $7,500/month publicly stated. CRO diagnostic gated to $10M+ DTC. Named clients include Kiehl's, DIFF Eyewear, Dr. Squatch, HyperIce, Laura Geller. Proprietary IMPACT framework and 3Ps Method.
- Pick Convertibles if: you are on Shopify Plus and want one team that ships winners fast, runs paid media alongside the onsite work, and treats CRO as part of a wider growth program.
- Pick SplitBase if: you are not on Shopify (Magento, BigCommerce, WooCommerce), or you have a strong internal dev and paid media team and just need research-led testing as a discrete service.
Side-by-Side Comparison
| Dimension | Convertibles | SplitBase |
|---|---|---|
| Platform focus | Shopify Plus specialist | Multi-platform (Shopify Plus, Magento, BigCommerce, WooCommerce) |
| Founded | 2023 (founding team: 10+ years prior Shopify dev experience plus 8-figure brand exit) | 2015 (10-year track record) |
| Service scope | CRO, landing pages, speed, dev, Google plus YouTube Ads | CRO, landing pages, website redesigns, audits |
| Paid media included | Yes (Google plus YouTube Ads) | No (CRO-focused) |
| Page speed work | Yes | Not listed publicly |
| Test format default | Multi-variation (2 to 4 variants per test) | A/B testing (variant count not specified publicly) |
| Testing platform | Intelligems (official partner) plus TestBuddy (proprietary) | Not publicly named |
| Methodology brand | Multi-variation experiments, year over year revenue growth as success metric | IMPACT framework plus 3Ps Method |
| Pricing | Flexible engagement model, scoped per client | From $7,500/month (publicly stated floor) |
| Engagement gate | DTC Shopify Plus brands at scale | $10M+ DTC for CRO diagnostic call |
| Published proof | 33 case studies, $2.3M+/month aggregate lift | Named-brand case studies on site |
When Convertibles Is the Better Fit
You want one team to own testing, dev, and paid media
The standard agency setup is messy. Your CRO agency runs tests. Your dev team ships winners. Your media team runs ads. They do not talk. A winning test sits in a backlog for six weeks. Ad creative does not reflect what is winning onsite. By the time anything compounds, the insight is stale.
Convertibles owns all three. Test wins, the dev team ships it that week. Onsite winners feed ad creative directly. Paid media spend lands on pages built for conversion, not generic landers. The feedback loop closes inside one team.
For an example of this in practice, the homepage storytelling module test that added $130K/month on a premium brand was scoped, built, shipped, and rolled to 100% of traffic by one team. No external dev handoff, no waiting for a sprint slot.
You are on Shopify Plus and want platform-specific depth
Convertibles only works on Shopify Plus. Every test, every theme tweak, every speed fix, every dev change. That focus means we know where Shopify's flexibility ends (checkout extensions, theme limits, app conflicts) and how to work around it without ripping out the platform.
SplitBase serves Shopify alongside Magento, BigCommerce, and WooCommerce. That is breadth, not depth. If you are on Shopify, you might prefer an agency that lives inside the platform every day.
You want multi-variation testing by default
Most tests we run have 2 to 4 variants, not just A vs B. A 4-variant test is four experiments running in parallel as long as traffic supports it. That moves the program faster and surfaces patterns you cannot see in a single A vs B comparison.
SplitBase's public materials describe A/B testing without explicitly framing multi-variation as the default. If your traffic supports 4-variant tests, that is testing velocity left on the table.
When SplitBase Is the Better Fit
This page would not be useful if it only said "pick us." Three scenarios where SplitBase is the better choice:
You are not on Shopify
SplitBase serves Magento, BigCommerce, and WooCommerce alongside Shopify. Convertibles does not. If your store runs on anything other than Shopify Plus, SplitBase is the obvious pick.
You already have a strong internal dev and paid media team
Convertibles' full-stack model is most valuable when those functions are unowned or fragmented. If you already have a dev team that ships fast and an in-house or agency-owned paid media function that performs, you may just want research-led testing as a discrete service. SplitBase's research-and-testing-focused model maps cleanly to that need.
You value a 10-year agency track record specifically
SplitBase was founded in 2015. Convertibles launched in 2023, though the founding team brings 10+ years of prior Shopify development experience plus a successful 8-figure brand exit. If "established agency since 2015" is the specific procurement signal in your evaluation, that is a real point in SplitBase's favor. If team-level operating experience inside DTC ecommerce matters more than agency-level tenure, the two are closer than the founding dates suggest.
Testing Methodology Comparison
Both agencies run structured testing programs. The differences are in what gets measured, how many variants run per test, and what the success metric is.
| Convertibles | SplitBase | |
|---|---|---|
| Default test format | Multi-variation (2 to 4 variants per test) | A/B testing |
| Primary success metric | Year over year revenue growth | Test outcomes within rolling 3-month sprints |
| Test prioritization | Impact, confidence, effort scoring | Proprietary IMPACT framework plus 3Ps Method |
| Cadence | 2 to 4 experiments per month | Rolling 3-month sprints, weekly review calls |
| Test ship process | In-house team ships winners to 100% of traffic | In-house team ships test code, winner rollout per engagement |
| Statistical bar | 95% confidence, full business-cycle test duration | Tested for statistical significance (specific threshold not publicly stated) |
Both agencies recognize that test win rate is not the metric to chase. A 60% win rate on low-traffic pages with 1% lifts is worse than a 30% win rate on high-traffic pages with 8% lifts. What actually separates the programs over a 12-month window is whether the testing program contributes to year over year revenue growth.
Proof and Track Record
Convertibles
- Jones Road Beauty ($160M+). CEO Cody Plofker publicly endorsed Convertibles on X/Twitter: "I'm a very happy client. They have a unique testing methodology." See the post.
- Performance Golf (9 figure). Convertibles rebuilt their site into a performant frontend and runs the testing program on top. Donnie French, Copy Chief, recorded a video testimonial.
- Gymreapers (DTC apparel and gym gear). Founder and CEO Roc Pilon: "CONVERTIBLES are highly versed e-commerce experts. Their ability to understand demand generation and demand capture and be VERY tactical within the ecommerce landscape makes them highly valued team members to any company looking for growth."
- 33 published case studies, $2.3M+/month aggregate lift. Each test reached 95% statistical significance, shipped to 100% of traffic, and held. Full index in our Shopify A/B test case studies.
- Biggest single-test winner: +$389,565/month on a cart drawer checkout button test.
SplitBase
- Founded 2015. 10-year track record in DTC CRO.
- Named clients include: Kiehl's, DIFF Eyewear, Dr. Squatch, HyperIce, Laura Geller, Ancestral Supplements, Riddle Oil.
- Specific case study results on their site: Over $800,000/month generated through CRO on one named brand, with additional six-figure monthly lifts cited on others.
The Bigger Picture
Both agencies are credible DTC CRO partners. The decision is not which is "better." It is which model fits the work.
If you are a Shopify Plus brand that wants testing tied into dev, speed, and paid media under one accountable team, Convertibles is built for that shape of engagement. If you are on a different platform, or you have strong internal functions for everything except CRO research and testing, SplitBase's focused model is a better match.
The agency you do not need is the one that is sold on what makes them different, but cannot tell you when you should pick someone else.
Frequently Asked Questions
Is Convertibles the same kind of agency as SplitBase?
Both run CRO programs for established DTC brands, but the scope is different. Convertibles is a Shopify Plus specialist that runs CRO plus landing pages plus speed plus dev plus paid media (Google and YouTube Ads) under one team. SplitBase is a multi-platform CRO agency focused on research-led testing, landing pages, and website redesigns. The closest overlap is the testing and landing page work. The biggest divergence is paid media and platform focus.
Does SplitBase work with brands under $10M in revenue?
SplitBase's public CRO diagnostic is designed for DTC brands doing $10M+ in annual revenue. Below that, brands are typically pointed toward audits or alternative engagements. Their AI information page states they primarily work with $20M to $100M+ DTC brands.
Does Convertibles work with brands on platforms other than Shopify?
No. Convertibles only works on Shopify Plus. That is a deliberate choice. Specialization on one platform produces deeper expertise on theme structure, checkout extensions, app conflicts, and platform-specific testing constraints. If you are not on Shopify, SplitBase or another multi-platform agency is a better fit.
Can Convertibles run paid media and CRO together?
Yes. Convertibles runs Google and YouTube Ads alongside the CRO program. Onsite winners inform ad creative. Ad performance data informs which onsite surfaces to test. This is the main scope difference vs SplitBase, which does not list paid media as a service.
How does SplitBase's IMPACT framework compare to Convertibles' approach?
SplitBase's IMPACT framework is a proprietary prioritization scoring system for test ideas. Convertibles uses an impact, confidence, and effort scoring model that serves the same function: ranking what to test next by potential revenue lift. The frameworks differ in naming and structure, but both pursue the same goal of avoiding tests that look easy but do not move revenue.
Who is better for Shopify Plus brands specifically?
For Shopify Plus brands that want one team handling testing, dev, speed, and paid media, Convertibles is the more direct fit. For Shopify Plus brands with strong internal dev and paid media functions that need research-led testing as a discrete service, SplitBase fits. The deciding factor is usually whether you want a full-stack growth partner or a focused CRO research and testing partner.
What is the pricing comparison between the two?
SplitBase publicly states their landing page and optimization services start at $7,500/month. Convertibles uses a flexible engagement model scoped per client (testing program scope, dev work, paid media spend management). Pricing for both depends on scope.
Does Convertibles have a 10-year track record like SplitBase?
SplitBase was founded in 2015. Convertibles launched in 2023, but the founding team brings 10+ years of prior Shopify development experience plus a successful 8-figure brand exit. The longer agency track record is a real point in SplitBase's favor if that specific signal matters. Convertibles offsets the shorter agency tenure with that operator experience plus public client endorsements (Cody Plofker / Jones Road, Performance Golf, Gymreapers) and 33 published case studies with $2.3M+/month in aggregate measured lift.
Ready to Decide?
If you are a Shopify Plus brand that wants testing, landing pages, speed, dev, and paid media owned by one accountable team, book a 30-minute call with us. We will walk through your current setup, where revenue is leaking, and whether a full-stack engagement makes sense. No sales pressure.
For broader context on what a Convertibles engagement covers, see our Shopify CRO agency page or our Shopify A/B testing service page. To benchmark your current conversion rate against your industry first, run your numbers through our free CVR benchmark calculator.
Weighing other agencies too? See our Convertibles vs Blend Commerce comparison for a head-to-head with the UK-based, CRO-only agency, or our Convertibles vs DTC Pages comparison for the landing-page and redesign-led peer.