Apex

Apex combines A/B testing, feature flags, and personalization for e-commerce. It supports A/B, multivariate, server-side, and mobile-app tests, with six to ten concurrent experiments and checks for conflicts before launch. Tests require a primary metric, planned sample size, and duration; results are withheld below 100 conversions. The default threshold for a winning result is 80% confidence and can be adjusted up to 99%. Apex Operator reads a live page and prepares structured edits or code-level variants for review before launch. Guardian can pause a variant that is breaking or harming results, return traffic to control, and explain the action in Slack. The Likelihood to Win score uses matched evidence from 4.3 million tests, research on the shop, and live results. Integrations include Shopify, Shopware, WooCommerce, Centra, headless and custom storefronts, analytics, consent managers, and team tools. Developer options include a versioned REST API, webhooks, CLI, MCP server, and SDKs; API keys have a limit of 100 requests per minute. Apex is made by Drip Trading GmbH and is available only within a DRIP program. The maker invites shops doing €100k or more per month to book a call about fit.

Apex brings experimentation, feature flags, and personalization together for e-commerce, with tools for reviewing variants and managing tests. Availability is limited to DRIP programs, so shops should first confirm whether they can access it.

Apex is aimed at e-commerce shops seeking experimentation, personalization, and feature flags across web and mobile. The maker invites shops doing €100k or more per month to discuss fit.

Apex is an experimentation and feature-management platform for e-commerce teams, particularly shops prepared to work within a DRIP program. Its testing controls and storefront coverage are substantial, but teams cannot simply sign up and start.

Overview

Made by Drip Trading GmbH, Apex combines A/B testing, feature flags and personalization. The maker invites shops doing €100k or more per month to book a call about fit. That makes it a more natural candidate for established retailers than for smaller shops seeking an independent, self-serve tool.

Apex also covers multivariate, server-side and mobile-app testing. That breadth can bring several testing needs under one roof, but access is limited to DRIP programs, and plans beyond Starter use custom pricing.

Key features

Experiments with safeguards

Apex supports six to ten concurrent tests, checks for conflicts before launch and can automatically pause a losing test. Each experiment requires a primary metric and a planned sample size and duration. Results remain withheld until 100 conversions; the default winner threshold is 80% confidence and can be configured as high as 99%. These controls favor teams willing to plan experiments carefully, while the conversion gate may frustrate teams expecting an early read.

Guardian can pause a variant that is breaking or harming results at a stated 99% bar, return traffic to the control and post an explanation to Slack. That is a useful safety measure for active tests, though teams should still decide what evidence threshold suits their decisions.

Building and assessing variants

Apex Operator reads a live page and creates structured edits or code-level changes. Operators review each variant before it goes live, preserving a human checkpoint rather than publishing generated changes automatically. A visual editor is also supported, while the custom code editor is included in the custom-priced Apex plan.

The Likelihood to Win score draws on evidence matched from 4.3 million tests, research on the shop and the shop’s live results. It gives teams another input when evaluating a test, not a substitute for the required metric, sample plan and conversion threshold.

Storefront and developer reach

Store connections include Shopify and Shopware apps, a WooCommerce plugin, Centra, headless React and Nuxt, custom storefronts, GA4, Tag Manager and consent managers. Other integrations include Microsoft Clarity, Hotjar, Slack, Microsoft Teams, Google Chat, Figma, Jira, GitHub, OpenAI Codex and Claude Code. This range is most useful to retailers whose storefront and analytics setup fits those connections.

Developers get a versioned REST API, signed webhooks, a CLI, an MCP server, and browser and language SDKs, including React bindings and SDKs for JavaScript, Python, Go, Ruby, PHP and Swift. API access is capped at 100 requests per minute per key, a limit teams should account for when planning integrations.

Privacy and assurance

Apex says its application and analytics run in London and its database in Ireland. It says it does not fingerprint visitors or store their IP addresses, and waits for consent where required by a consent manager. Its SOC 2 and ISO 27001 audit package is prepared, but the audit has not begun; organizations requiring completed audits should weigh that status carefully.

Pricing

Apex is presented as freemium, with a free Starter plan and custom-priced higher tiers. The product is available only inside a DRIP program, however, so the free plan does not make Apex a self-serve signup option.

Apex Starter

Starter costs nothing, billed Free forever, with no card required. It includes three live experiments, 10,000 tested visitors per month, one environment, three seats, one workspace, five custom metrics and seven-day custom data retention. The 30-day trial includes AI Builder, read-only pattern library access and a real-time dashboard; after the trial, tests pause and data remains read-only for 14 days. Community and email support are included. This tier suits a small team assessing the workflow, but its experiment, visitor, seat and retention caps limit ongoing use.

Apex and Apex Enterprise

Apex has custom pricing tailored to traffic and team size. It adds unlimited experiments and visitors, a custom code editor, multivariate, server-side and mobile-app testing, approval workflows, SSO, MFA, role-based access control and data residency. Shops that need those capabilities can consider it, but should expect a tailored quote rather than a published price.

Enterprise also uses custom pricing, is sized to scope and requires annual contracts. It includes every feature plus a dedicated conversion manager, consumer psychologist, data analyst, UX/UI designers, testing engineers and QA. That service model is aimed at organizations seeking a larger specialist team; the annual commitment is a significant consideration. Apex lists a dedicated success manager and a 99.9% SLA, while Enterprise includes regular reviews.

Platforms

Apex supports web and mobile, with Android, iOS, web and API platforms. Mobile SDK support and mobile-app testing extend its reach beyond storefront pages, while server-side testing and audience targeting suit teams managing experiences across different delivery paths.

Who it's for

Apex is best suited to established e-commerce shops that can access a DRIP program and want coordinated experimentation, feature flags and personalization across storefronts, servers or mobile apps. Retailers with developers can make use of its APIs and SDKs; teams preferring visual editing can review Operator-built variants before launch.

It is a poor fit for shops that need independent self-serve access, completed SOC 2 or ISO 27001 audits, or predictable published pricing for advanced plans. Smaller teams may also find Starter’s monthly visitor and experiment limits restrictive.

Pros and cons

• Pros: Conflict checks, conversion-gated results and Guardian’s pause-and-revert response give teams practical protections against overlapping or harmful tests.
• Pros: Storefront, analytics, collaboration and developer integrations cover a broad e-commerce toolchain.
• Pros: Starter is free forever and includes three seats, making a limited evaluation possible without a card.
• Cons: Access is restricted to DRIP programs, so there is no self-serve route to begin.
• Cons: Starter is capped at three live experiments and 10,000 tested visitors per month, with seven-day custom data retention.
• Cons: Apex and Enterprise require custom pricing, and Enterprise requires an annual contract.
• Cons: The SOC 2 and ISO 27001 audit has not begun, which may rule it out for buyers requiring completed audits.

Alternatives

For teams whose priority is feature flags rather than Apex’s e-commerce testing breadth, Confidence by Spotify offers a free plan with unlimited flags and seats, up to five surfaces and 75,000 credits per month. Featureflip is another free-forever option for a solo developer, with 10 flags per project, two environments, one project and seven-day audit logs.

If the goal is messaging rather than experimentation, Firebase Cloud Messaging is listed as a no-cost service. Teams wanting self-hosted experimentation and flags can consider GrowthBook, whose open-source self-hosted plan includes unlimited experiments, flags and traffic. For prototypes limited to native platforms, Nativeblocks has a free tier for up to 1,000 active users.

Webtrends Optimize offers a free account for websites with fewer than 10,000 sessions each month and is an option for teams considering a different optimization platform. DevCycle is a freemium alternative for teams comparing feature-management tools. For a self-hosted preview with all features included, Experimently offers a free preview on the customer’s AWS account.

Readers comparing experimentation products more broadly can browse A/B Testing Tools.

Verdict

Apex is a strong fit for established shops inside a DRIP program that need guarded e-commerce testing across web, server-side and mobile experiences. Its experiment safeguards, integrations and developer access are compelling reasons to consider it; the program-only availability, custom pricing and unfinished audit process are equally clear reasons to look elsewhere.