2026 ranking, updated 2026-09-22

The 8 Best A/B Testing Tools for Shopify in 2026

Eight platforms, ranked for one question a Shopify merchant actually asks: what can this tool change in my store, and does it count my orders correctly? We build and sell one of them, so we published the weights we rank on and we name every place a competitor beats us. Two of the eight cannot touch the Shopify checkout at all, and we say which.

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Ranking

The ranking

Drip Trading GmbH

Apex by DRIP

9.3/10

Our platform Apex has the deepest Shopify integration here. The app passed Shopify’s review and installs by OAuth from a direct link, not from an App Store listing. It installs a theme app extension, web pixel, checkout UI extension, post-purchase extension and three Shopify Functions. So Cart Transform makes the tested price the price the customer is charged, and shipping offers and post-purchase upsells are real test types. Orders arrive by webhook, deduplicated per order, refunds modelled. Win-rate prediction from one of the largest A/B test databases in e-commerce, 4.3 million tests from 151,000 shops, moved our average win rate from 27% in 2024 to 55% last quarter. Two honest limits: our staff switch the commerce surfaces on per shop, and revenue significance stays gated after certification measured false positives above 20%. Book a call for pricing.

Best for: Shopify shops that want to test the charged price, shipping and post-purchase, not just page copy

Statistics: Mixed
Shopify: Shopify app
Hosting: UK/IE
Consent and cookies: Cookies or local storage
Server-side: PartialDecide API and deployable Cloudflare edge worker, but no server-side SDKs.
Personalization: PartialBackend, API, CLI and measurement are shipped; the dashboard is a labs feature and off by default.

Explore Apex

Convert Insights Inc.

Convert Experiences

8.4/10

Convert has the cleanest Shopify install in this field, and that is what moves it ahead of Varify on our weights: a native App Store app, free to install, that injects the script without a theme edit and stays compatible with checkout extensibility. Read that precisely, because Convert does: it tracks through the checkout, it does not let you edit the checkout. Storefront price tests, multi-arm bandits and order tracking are included, and the statistics are the strictest in this price class, with real sequential testing and an SRM check on every plan. The cost model is the catch for a busy shop: Growth and Pro both stop at 100,000 tested users per month, then overage starts at $399 per extra 100,000.

Best for: Shopify shops and agencies that want an App Store install and strict statistics

Statistics: Mixed
Shopify: Shopify app
Hosting: EU
Consent and cookies: Unverified
Server-side: Yes
Personalization: Yes

Varify Software GmbH

Varify.io

8.2/10

Varify is the cheapest way to test a high-traffic Shopify store: a flat rate from €199 per month with unlimited tracked users, so a Black Friday spike never turns into an invoice. On Shopify it installs as a snippet rather than an app, imports orders and revenue into its dashboard, and documents price, theme and template tests on the storefront. Checkout testing exists only through the separate Varify checkout app at $119 per month on top, and only on Shopify Plus. Two things cost it rank under our install and depth weight: no App Store app for the storefront route, and one domain per plan on every tier, which multi-store merchants feel immediately. The entry plan also runs one-sided statistics by default.

Best for: High-traffic Shopify shops that want a predictable monthly bill

Statistics: Mixed
Shopify: Snippet
Hosting: DE
Consent and cookies: Cookieless available
Server-side: Yes
Personalization: Yes

Kameleoon SAS

Kameleoon

7.4/10

Kameleoon is the only enterprise-class tool here that publishes an entry price, $495 per month for 10 experiments and 50,000 tracked users, and its Shopify app carries the Built for Shopify badge, the strongest formal install signal in this ranking. The depth behind the badge is where it loses ground: checkout testing is documented, but it needs Shopify Plus, a developer-built checkout UI extension and cart-attribute plumbing, so most merchants cannot reach it. The app has zero reviews after more than four years on the App Store, so you get no signal from other shops at all. Feature management and personalization sit in the custom-priced Enterprise tier, not in the $495 plan.

Best for: Shopify Plus retailers with a developer and an enterprise budget

Statistics: Mixed
Shopify: Shopify app
Hosting: EU
Consent and cookies: Cookies or local storage
Server-side: Yes
Personalization: Yes

Conversion Expert GmbH

ABlyft

7.0/10

ABlyft counts Shopify orders better than almost anything else here: a server-side order webhook that ad blockers and missing consent cannot break, which is exactly where pixel-based revenue tracking quietly loses money. Under our install and depth weight it pays for the opposite. There is no Shopify app at all, no checkout testing and no documented Shopware or Magento path, so the integration is a snippet plus tracking wiring rather than a packaged install. The free plan is genuine, no credit card and no sales call, and paid plans are quoted per tested user. The snippet is light, 13 KB and around 30 ms. The vendor is 2 to 10 people, a real continuity question for a shop betting its program on it.

Best for: Developer-led Shopify shops that want order data no ad blocker can break

Statistics: Mixed
Shopify: No app
Hosting: DE
Consent and cookies: Cookieless available
Server-side: No
Personalization: No

Wingify (Everstone Capital)

VWO

6.8/10

VWO gives a merchant the widest toolset behind one login: testing, heatmaps, recordings, funnels, personalization and a CDP, with well-documented Bayesian statistics and automatic SRM checks. Its Shopify app is free and installs cleanly, but VWO’s own Shopify page excludes checkout, post-purchase and order-status pages, so the highest-value tests in a store are off the table before you start. That one sentence in its documentation costs it most of its score here. Prices are published nowhere and scale per module and per tracked user, so the real cost of a busy shop cannot be estimated before a sales call. Procurement data puts the median contract near $16,300 per year.

Best for: Shops that want testing and behavior analytics behind one login, outside the checkout

Statistics: Sequential
Shopify: Shopify app
Hosting: EU
Consent and cookies: Cookies or local storage
Server-side: Yes
Personalization: Yes

Wingify (Everstone Capital)

AB Tasty

6.3/10

AB Tasty is built for large retail programs, with EmotionsAI segmentation, recommendations and merchandising beside the testing engine, and it publishes its Bayesian method in more detail than most competitors dare. On Shopify the record is thin: four app reviews since May 2024, and no public documentation on whether the Shopify checkout can be tested at all, which under our depth weight we score as unproven rather than as a yes. Pricing is quote-only with no self-serve trial, median around $66,500 per year in procurement data. Since the January 2026 merger into VWO’s parent and the June cut of all French development teams, the product’s independent future is the first question to ask, not the last.

Best for: Large retail brands already invested in the platform

Statistics: Bayesian
Shopify: Shopify app
Hosting: EU
Consent and cookies: Cookies or local storage
Server-side: Yes
Personalization: Yes

Optimizely (Insight Partners)

Optimizely Web Experimentation

5.8/10

Optimizely runs the best statistics in this comparison, sequential always-valid inference with false-discovery-rate control, and it is still the wrong tool for almost every Shopify merchant. There is no first-party Shopify app: installing means a manual theme.liquid edit or a third-party app at $29 per month, and Optimizely’s own docs state the snippet does not load on Shopify checkout pages. Revenue tracking leans on ODP, a separate paid product, and reviewers report reporting gaps on metrics like average order value. With a median contract near $81,000 per year, no trial and a heavy developer dependency, it belongs to enterprise experimentation programs. Our install and depth weight is why it finishes last here rather than mid-table.

Best for: Enterprise experimentation programs, not single Shopify shops

Statistics: Sequential
Shopify: No app
Hosting: EU
Consent and cookies: Cookies or local storage
Server-side: Yes
Personalization: Yes

Comparison

All tools compared

Tool	Statistics engine	Ecommerce and Shopify path	Hosting	Consent and cookies	Pricing
#1 Apex by DRIP	MixedFrequentist engine with deliberately conservative defaults: fixed-horizon testing with Holm-Bonferroni correction and a sample-ratio-mismatch gate, plus optional always-valid (mSPRT) sequential analysis. Revenue significance is intentionally held back after internal certification measured 20%+ false-positive rates on naive revenue tests. On top: win-rate prediction from the 4.3M-test corpus lifts the average program win rate from 27% to 55%.	Shopify appShopify app that passed Shopify’s review (installs via OAuth from the dashboard; not App-Store-listed yet), plus WooCommerce, Shopware, Centra and custom storefronts. Unique in this index: real charged-price tests via Shopify Cart Transform, shipping-cost tests and post-purchase experiments.	UK/IE	Cookies or local storageUK (London) and Ireland; DPA relies on the UK adequacy decision. Cookie and localStorage visitor IDs last 365 days. Apex uses no fingerprinting, never stores visitor IPs, integrates with 8 consent managers and does not support IAB TCF.program managed in Drata, SOC 2 / ISO 27001 audit package prepared, audit not yet begun	Only inside DRIP. Book a call
#2 Convert Experiences	MixedThe deepest stats in this comparison: t-tests with configurable tails, Bonferroni/Sidak corrections, Bayesian with explicit risk thresholds, and real sequential testing via Asymptotic Confidence Sequences (Pro+). SRM check on every plan.	Shopify appNative Shopify app (free to install, launched Oct 2024, still 0 reviews) that injects the script without theme edits and is compatible with checkout extensibility, for tracking, not checkout-UI editing. Price testing and multi-arm bandits included.	EU	UnverifiedEU-hosted on AWS (security page: eu-west-1 Ireland; AI info page: Frankfurt, Convert’s own pages disagree). SOC 2 attested and ISO 27001 certified, free DPA. No documented cookieless delivery mode or Google Consent Mode integration.	Growth $399/mo ($299 paid annually), Pro $599/mo ($420 annually), both capped at 100K tested users/month; overage from $399 per 100K. USD, tax-exclusive. 15-day free trial, no credit card.
#3 Varify.io	MixedOne-sided frequentist by default (all plans); two-sided tests and Bayesian with runtime forecast are Pro-only. No sequential/always-valid inference and no in-product sample-size planner.	SnippetStorefront testing via snippet (no app needed); Shopify order/revenue import into the dashboard. Checkout testing needs the separate "Varify: Checkout A/B Testing" app, $119/month extra and Shopify Plus only.	DE	Cookieless availableGerman company, AWS hosting in Germany (Frankfurt). No cookies by default (local/sessionStorage), no personal data beyond IP, DPA with TOMs, documented Google Consent Mode V1/V2 setups. Not SOC 2 certified (roadmap: 54%).	Growth €249/mo (€199 paid annually), Pro €349/mo (€249 annually), Enterprise from €499/mo, unlimited tracked users on every plan, but only 1 domain. 30-day free trial, no credit card.
#4 Kameleoon	MixedFrequentist, Bayesian AND sequential testing side by side, plus CUPED, multiple-testing correction and SRM detection, all included at the entry tier. Caution: the reported "reliability" metric is 1 − p-value, not the probability the variation wins.	Shopify appShopify app carries the "Built for Shopify" badge but has 0 reviews after 4+ years (listed June 2021). Checkout testing needs Shopify Plus plus a developer-built Checkout UI extension and cart-attribute plumbing, not point-and-click.	EU	Cookies or local storageEuropean infrastructure without US hyperscalers: subprocessors are OVHcloud (France) and Hetzner (Germany); EU and North America data regions exist (EU residency is a choice, not automatic). Four documented consent modes, Delayed Mode renders experiments while writing and transmitting nothing until consent. ISO 27001:2022, SOC 2 Type 2, PCI DSS.	PBX Starter from $495/month (10 experiments, 50,000 tracked users), the only enterprise-class tool here with a public entry price. Enterprise is custom. 30-day free trial (3 experiments, no credit card). Feature management, personalization and the dedicated code editor are Enterprise-only.
#5 ABlyft	MixedFrequentist and Bayesian, selectable per experiment, with a configurable certainty level (50–99.9%) and a minimum-conversions threshold. No sequential testing and no sample-size calculator.	No appNo Shopify App Store app. Integration is snippet plus documented tracking wiring: a server-side order webhook (immune to ad blockers and missing consent) and/or the Customer Event Pixel. No checkout-UI testing.	DE	Cookieless availableThe strictest privacy posture in this comparison: no personal data stored at all, no IP, no user ID. German hosting, localStorage instead of cookies, self-hostable snippet, bring-your-own-tracker option. No SOC 2 or ISO 27001 claimed.	A genuine free plan (no credit card, no sales call) plus a quoted paid plan billed by tested users. No public numbers.
#6 VWO	SequentialBayesian engine with sequential analysis that handles peeking and multiple comparisons; MDE, ROPE, false-positive rate and power are user-settable; automatic SRM, outlier and Simpson’s-paradox checks. Note: "SmartStats" is now legacy branding for non-Data360 accounts.	Shopify appShopify app (free to install, launched Mar 2024), 0 reviews after ~2.5 years. It deploys tracking everywhere except checkout, post-purchase and order-status pages: VWO cannot A/B test the Shopify checkout. Available from the Growth plan.	EU	Cookies or local storageReal EU data-residency option: customers can pin visitor data to GCP europe-west1 (Belgium); US and India regions also exist. Three documented consent modes (Completely/Partially/Do Not Block), DPA with SCCs, ISO 27001:2022, SOC 2 Type II.	No published prices, plans (Growth/Pro/Enterprise) are quoted per module and billed on Monthly Tracked Users. 30-day free trial. Procurement data (Vendr, 102 purchases) puts the median annual contract at ~$16,300 (range ~$7,800–$35,800).
#7 AB Tasty	BayesianWell-documented Bayesian engine (beta-binomial priors, ~1M Monte Carlo samples, automatic Bonferroni) for rate metrics; Mann-Whitney U test for revenue metrics. Sequential Testing Alerts are loser-detection only, AB Tasty itself advises against calling winners early with them.	Shopify appShopify app (free to install, launched May 2024): 4.9/5 from only 4 reviews, a thin footprint for an enterprise vendor. Whether the Shopify checkout can be tested is not documented anywhere public.	EU	Cookies or local storageFirst-party cookies only (13-month lifetime), visitor IPs "immediately deleted", three consent modes incl. Didomi support, DPA via dpo@abtasty.com. Runs on GCP/AWS with region-follows-client but no named EU region. Holds its own ISO 27001; SOC 2 is attributed to its cloud providers, not itself.	"No fixed plans. Just a custom proposal." Annual contracts, no self-serve trial (a 1–2 week proof of concept instead). Procurement data (Vendr) puts the median around $66,500/year.
#8 Optimizely Web Experimentation	SequentialStats Engine: frequentist sequential testing with always-valid inference (mSPRT) and tiered Benjamini-Hochberg false-discovery-rate control, academically published and genuinely differentiated. Fixed-horizon and Bayesian options exist in beta (documented for Feature Experimentation).	No appNo first-party Shopify app for Web Experimentation, install is a manual theme.liquid snippet edit or a $29/month third-party app. Optimizely’s own docs: the snippet does not load on Shopify checkout pages; checkout events need a custom pixel. Revenue tracking leans on the separate paid ODP product.	EU	Cookies or local storageEU Data Hosting offered, but Optimizely states "some services aren’t in scope" without listing them, whether Web Experimentation is covered is unverified. Strong cert list (ISO 27001:2022, SOC 2 Type 2, PCI DSS, TISAX), public DPA with SCCs. Five consent options; no cookieless mode for Web Experimentation.	"Every Optimizely plan is individually packaged", no prices, no trial, no free tier for Web Experimentation. Procurement data (Vendr, 126 purchases) reports a median annual contract of ~$81,000; third-party estimates put entry around $36–40k/year.

Method

How we rate

We rank our own platform first here, so the weights above are published before the list and every score is built from them: 30% install path and depth on Shopify, 25% what you can test in a store, 20% order data you can trust, 15% cost per tested visitor, 10% running tests without a developer. Competitor facts come from each vendor’s own pricing pages, product documentation and Shopify App Store listing, checked on 1 September 2026, and where a vendor documents something we cannot do, we print it. Where a vendor documents nothing, we score it as unproven instead of as a yes. Facts about our platform Apex come from a code audit of the product, not from a marketing brief, which is why the two limits we score against ourselves are in the verdict.

30%

Install path and depth on Shopify

App install versus snippet versus theme edit, whether the app is listed in the Shopify App Store, and how far the integration reaches: theme app extension, web pixel, checkout UI extension, Shopify Functions.

25%

What you can test in a Shopify store

Charged price, shipping offers, checkout content and post-purchase upsells, plus what it takes to get there: Shopify Plus, a developer, or a paid add-on app.

20%

Order data you can trust

Order-level revenue from Shopify webhooks instead of pixels, deduplication per order, refunds, average order value and revenue per visitor, and whether orders survive ad blockers and missing consent.

15%

Cost per tested visitor

Flat rate versus monthly tracked users, what a Black Friday traffic spike costs, and which Shopify capabilities are metered extras.

10%

Running tests without a developer

Launching and QA on a live shop, protection when a variation loses money, and multi-store or agency accounts.

Common questions

What is the best A/B testing tool for Shopify in 2026?

Our platform Apex ranks first: it predicts which tests will win from a database of 4.3 million A/B tests, and it is the only tool here that changes the price the customer is actually charged, using Shopify Cart Transform. Convert follows on install quality, Varify on flat-rate cost.

Can you A/B test the Shopify checkout?

Not with a normal snippet: Checkout Extensibility blocks third-party JavaScript there. The working routes are checkout UI extensions and Shopify Functions (Apex), Varify’s separate checkout app at $119 per month on Plus, or a Plus extension you build yourself (Kameleoon). VWO and Optimizely document that they cannot.

Can you A/B test prices on Shopify?

Yes, but displayed price and charged price are two different problems. Most tools only change the price shown on the page, and the customer still pays the old one at checkout. Apex uses Shopify Cart Transform, so the tested price is the charged price. Convert and Varify document storefront price tests.

Which A/B testing tools install as a Shopify app?

Convert, Kameleoon, VWO and AB Tasty have App Store listings. Apex has a review-passed app that installs by direct link and is not App-Store-listed yet. Varify installs by snippet and sells checkout testing as a separate app. ABlyft and Optimizely have no first-party app.

Do Shopify A/B testing apps slow the store down?

It depends on how the script loads. ABlyft ships a 13 KB snippet at roughly 30 ms. Apex loads through a Shopify theme app extension and a Cloudflare edge. Reviewers report flicker and tag weight for AB Tasty, VWO and Optimizely, whose faster edge mode drops personalization.

The math is the easy part.
Knowing what to test isn't.

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At least 10% more revenue in under six months, or month seven onward is free.

When you can predict what wins, you can promise the outcome. What counts as uplift, how it's measured, and what happens if we miss is written down in plain language.

We can promise it because we know our numbers: more than 50% of our A/B tests win, across 4,000+ documented experiments. That's when a guarantee stops being marketing and becomes underwriting.