Test PDPs, themes, prices, and checkout on your live Shopify store — and judge every experiment on real Shopify revenue, not clicks. CustomFit installs from the App Store, edits nothing in your theme, and ships your first test the same day.
Install from the App Store, approve scopes, and you're live. No theme surgery, no developer.
Every test is measured against real order revenue and AOV — not a proxy click metric.
Edge evaluation resolves variants before first paint, so Core Web Vitals stay healthy.
From a single button to a whole theme — all from one app, all judged on revenue.
Headlines, hero, badges, reviews & CTAs.
Serve an alternate theme to a cohort.
Find the price that maximizes profit.
Compare separate pages or new builds.
Upsells, shipping, and Shopify Plus checkout.
Sort order, filters & merchandising.
To A/B test on Shopify, install a Shopify A/B testing app like CustomFit.ai from the App Store, build variants of any page in a no-code visual editor, split your traffic, and measure the winner on real Shopify revenue. No theme-file edits are needed, variants resolve at the edge with no flicker, and tests run over your canonical pages so SEO is unaffected.
Most Shopify testing tools call a winner on click-through. CustomFit ties variant assignment to actual Shopify orders, so a test that lifts clicks but drops AOV is caught — and you only ship changes that grow real revenue.
Once a variant wins, roll it out to the exact shoppers it works for, add conversion widgets, and let AI Copilot draft your next test — all in the same Shopify app, on one audience model.
We ship Shopify PDP and theme tests the same afternoon we think of them — no dev queue, and every winner is proven on real orders.
Shopify A/B testing lets D2C brands validate changes to their store on real traffic before rolling them out to everyone. Instead of guessing whether a new PDP layout, theme, price, or checkout flow will perform, you split traffic between the current version and a variant, then let the data decide — measured, ideally, on real Shopify revenue rather than clicks.
The key for Shopify is doing this without touching theme files. CustomFit.ai installs as a Shopify app and layers variants on top of your live theme via its SDK, so there's nothing to merge, break, or roll back in code. Variants resolve at the edge before first paint, which keeps Core Web Vitals green and avoids the flicker that plagues script-injected testing tools. And because tests run over your canonical pages with no cloaking, your SEO is unaffected.
What sets a great Shopify testing program apart is judging experiments on outcomes that matter: revenue per visitor, average order value, and margin — with guardrails on refunds. CustomFit ties variant exposure and conversions to actual Shopify orders, supports every test type from a single button to a whole theme, and pairs testing with personalization, 100+ conversion widgets, and an AI Copilot — so once you find a winner, you can roll it out to the right shoppers and keep optimizing, all from one app.
Install a Shopify A/B testing app like CustomFit.ai from the App Store, build variants of any page in a no-code editor, split your traffic, and measure the winner on real Shopify revenue. No theme-file edits are required, and tests resolve at the edge with no flicker.
Yes. CustomFit supports full theme A/B testing — serving an alternate theme to a cohort — plus price, bundle, content, and checkout testing, all judged on revenue per visitor and AOV rather than clicks alone.
No. CustomFit evaluates variants at the edge before first paint, so there's no flicker and Core Web Vitals stay green. Tests run over your canonical pages with no cloaking, so SEO is unaffected.
No. Marketers build and ship tests in a no-code editor; developers can use server-side testing and the API for pricing logic and checkout when they want deeper control.
Yes. CustomFit supports Shopify and Shopify Plus, including checkout experiments via Checkout UI Extensions on Plus.
The integration page covers connecting Shopify data to CustomFit; this page is about the A/B testing use case specifically — what you can test and how it's measured on Shopify revenue.
Pick the PDP, theme, or price to test.
Create the variant in the no-code editor.
Send traffic and watch real Shopify orders.
Promote the winner — no theme edit, no flicker.
Other ways teams lift conversions with CustomFit.
Install the app, build a variant, and read the revenue verdict — no code, live in 4 minutes.