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SPECIFICTION
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Compose

compose.co

Free plan Web
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Spec score 8.1 #19 of 52 in A/B Testing Tools

What it is

Compose is a pay-as-you-go web platform for A/B testing and conversion rate optimization. It supports A/B/n, split URL, split theme, and split template tests, with custom goals, audiences, triggers, and traffic allocation. A visual editor and audience targeting are available for building and directing experiments. For planning, teams can use a shared hypothesis backlog, PIE prioritization, and an experimentation roadmap. Reports update in real time and include frequentist statistical calculations; GA4 and BigQuery integrations are listed. Shopify users can create no-code experiments on themes and templates through Shopify’s editor. Compose says its client-side testing uses AWS Lambda@Edge for speed and to avoid flicker. The product lists unlimited experiments, variations, collaborators, and projects. You can explore it without charge until launching a first experiment, but there is no traditional free trial. The Early Adopter Plan is $0.00 per month, billed at $0.0012 per monthly tested user, with usage billed monthly for the prior month. Server-side testing is not available.

Spec sheet

Product
Compose is a pay-as-you-go A/B testing and conversion rate optimization platform.Read 9 Oct 2026 · compose.co
Intended users
Compose describes its tools as designed for small and mid-sized businesses and highlights agency and internal CRO teams as users of its planning tools.Read 9 Oct 2026 · compose.co
Support
Support options include a complimentary one-hour onboarding session, email support, a help center with tutorial videos, and paid advanced support or technical sessions.Read 9 Oct 2026 · compose.co
AI feature status
The homepage labels AI hypothesis generation as coming soon.Read 9 Oct 2026 · compose.co
Analytics
Compose provides real-time reports and frequentist statistical calculations, with GA4 and BigQuery integrations listed on its pricing page.Read 9 Oct 2026 · compose.co
Billing
The pricing FAQ says charges begin when an experiment is initiated, and usage is billed on the first of each month for the prior month.Read 9 Oct 2026 · compose.co
Experiment types
It supports A/B/n and split URL testing with custom goals, audiences, triggers, and traffic allocation.Read 9 Oct 2026 · compose.co
Free access
The FAQ says users can explore the platform for free until launching their first experiment, and that Compose does not provide a traditional free trial.Read 9 Oct 2026 · compose.co
Planning
CRO planning tools include a collaborative hypothesis backlog, PIE prioritization, and an experimentation roadmap.Read 9 Oct 2026 · compose.co
Server-side testing
Compose states that server-side testing is not available at this time.Read 9 Oct 2026 · compose.co
Shopify
The Shopify integration supports no-code experiments on themes and templates using Shopify’s editor.Read 9 Oct 2026 · compose.co
Speed
Compose says it uses AWS Lambda@Edge for high-speed, flicker-free client-side testing.Read 9 Oct 2026 · compose.co
Usage limits
The product page lists unlimited experiments, collaborators, variations, and projects.Read 9 Oct 2026 · compose.co

Plans and prices

Early Adopter Plan Free $0.0012 / Monthly Tested Users (MTU); billed at the end of each month for the prior month’s usage Unlimited experiments & variants · Unlimited collaborators & projects · No minimum tested users Read 9 Oct 2026 · compose.co
Half-day with Compose team $400, paid once $400 | One time fee paid up front Half-day technical team session via video call Read 9 Oct 2026 · compose.co
Full-day with Compose team $800, paid once $800 | One time fee paid up front Full-day technical team session via video call Read 9 Oct 2026 · compose.co
Advanced Support Add-on Price not published Subscription fee; price not stated Dedicated success manager · Up to 1 hour of monthly meeting time · Chat support · Continuous data storage Read 9 Oct 2026 · compose.co

Every Compose plan and price →

Strong points and limits

Strong points

  • Supports four web experiment types.
  • Includes a visual editor and audience targeting.
  • Provides real-time reports and frequentist calculations.
  • Offers a hypothesis backlog and experimentation roadmap.
  • Lists unlimited experiments, variations, collaborators, and projects.

Limits

  • Server-side testing is unavailable.
  • Charges begin when an experiment is initiated.
  • No traditional free trial is offered.
  • AI hypothesis generation is marked coming soon.

Who it suits

Compose is aimed at small and mid-sized businesses, as well as agency and internal CRO teams that need web experiments and planning tools. Shopify teams can use its no-code theme and template testing integration.

Verdict

Compose brings experiment planning, web testing, and reporting into one platform, with a Shopify integration. Its usage billing and lack of server-side testing are important fit considerations.

Where Specifiction places it

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