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Compose
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 experiments, with custom goals, audiences, triggers, and traffic allocation. A visual editor and audience targeting are included. Planning tools provide a shared hypothesis backlog, PIE prioritization, and an experimentation roadmap. Reports update in real time and use frequentist statistical calculations; GA4 and BigQuery integrations are listed. Shopify users can run no-code tests on themes and templates through Shopify’s editor. Compose lists unlimited experiments, collaborators, variations, and projects. It says client-side testing uses AWS Lambda@Edge, while server-side testing is unavailable. Users can explore the platform free until launching an experiment, but there is no traditional free trial. The Early Adopter Plan is free, billed at 0.0012 USD per monthly tested user.
For and against
For
- Supports four listed web experiment types
- Visual editor and audience targeting
- Unlimited experiments and variations listed
- Real-time reports with statistical calculations
- Free access before first experiment launch
Against
- Server-side testing unavailable
- No traditional free trial
- Usage billing starts when an experiment begins
- Web platform only
The verdict
Compose combines experiment creation with CRO planning and reporting in a web interface. Teams should account for usage-based billing and the absence of server-side testing.
Who it suits
Compose suits small and mid-sized businesses, agencies, and internal conversion-rate teams running web experiments. It is intended for teams that need planning tools, visual editing, and audience targeting.
Plans and prices
Early Adopter Plan
Unlimited experiments & variants · Unlimited collaborators & projects · No minimum tested users
Read 9 Oct 2026 · compose.co
Half-day with Compose team
Half-day technical team session via video call
Read 9 Oct 2026 · compose.co
Full-day with Compose team
Full-day technical team session via video call
Read 9 Oct 2026 · compose.co
Advanced Support Add-on
Dedicated success manager · Up to 1 hour of monthly meeting time · Chat support · Continuous data storage
Read 9 Oct 2026 · compose.co
On the record
- AI feature status
- The homepage labels AI hypothesis generation as coming soon.compose.co · read 9 Oct 2026
- Analytics
- Compose provides real-time reports and frequentist statistical calculations, with GA4 and BigQuery integrations listed on its pricing page.compose.co · read 9 Oct 2026
- 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.compose.co · read 9 Oct 2026
- Experiment types
- It supports A/B/n and split URL testing with custom goals, audiences, triggers, and traffic allocation.compose.co · read 9 Oct 2026
- 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.compose.co · read 9 Oct 2026
- 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.compose.co · read 9 Oct 2026
- Planning
- CRO planning tools include a collaborative hypothesis backlog, PIE prioritization, and an experimentation roadmap.compose.co · read 9 Oct 2026
- Product
- Compose is a pay-as-you-go A/B testing and conversion rate optimization platform.compose.co · read 9 Oct 2026
- Server-side testing
- Compose states that server-side testing is not available at this time.compose.co · read 9 Oct 2026
- Shopify
- The Shopify integration supports no-code experiments on themes and templates using Shopify’s editor.compose.co · read 9 Oct 2026
- Speed
- Compose says it uses AWS Lambda@Edge for high-speed, flicker-free client-side testing.compose.co · read 9 Oct 2026
- 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.compose.co · read 9 Oct 2026
- Usage limits
- The product page lists unlimited experiments, collaborators, variations, and projects.compose.co · read 9 Oct 2026
