The best Growth experiments tools
About Growth experiments
I have been testing since 2010, before most B2B companies even knew what a growth experiment was. I am CXL certified in experimentation, I built the testing programme for NU.nl (the largest news site in the Netherlands), and I have run A/B tests for dozens of brands across SaaS, e-commerce, and lead generation. Most companies either skip testing entirely or run random experiments without a clear plan. Both waste time. The ones that grow fastest have a simple system: a backlog of ideas ranked by potential impact, a clean process for running tests, and a habit of documenting what they learn so every experiment builds on the last. This playbook gives you that system. You will learn how to collect and prioritise experiment ideas, write hypotheses that actually teach you something, set up tests properly, and turn results into repeatable wins. No statistics degree required, just discipline and curiosity.
Top picks
VWO
Runs A/B and multivariate tests on websites to track visitor behaviour and optimise conversion rates.
Best for: Marketing, product and growth teams with enough website traffic to run structured A/B tests, who want heatmaps, recordings and experiments in one workspace rather than separate tools.
- Free plan
- No
- Price
- Not listed
- MCP server
- Yes
- API
- Yes
Convert Experiences
A/B testing and experimentation platform with tiered plans, a free trial and an official MCP server.
Best for: Marketing, growth and agency teams that run A/B tests on websites and want a platform with published plans, a free trial and support for AI assistants.
- Free plan
- No
- Price
- From $299/mo
- MCP server
- Yes
- API
- Yes
OmniConvert
A/B testing, web personalisation and on-site surveys all combined in one ecommerce-focused platform.
Best for: Ecommerce and DTC teams, especially on Shopify, that run A/B tests, segment visitors and collect customer feedback, and want to start testing without paying until traffic grows.
- Free plan
- Yes
- Price
- From $245/mo
- MCP server
- Yes
- API
- Yes
Optimizely
Experimentation and personalisation platform for testing websites and features, sold through a sales conversation.
Best for: Larger marketing, product and engineering teams that run a structured testing programme across websites and features and want one vendor for experiments and content.
- Free plan
- Price
- Not listed
- MCP server
- Yes
- API
- Yes
The top 4 side by side
| 15 points compared | ||||
|---|---|---|---|---|
| Starts at | $299/mo | $245/mo | ||
| Free plan | No | No | Yes | |
| API | Yes | Yes | Yes | Yes |
| MCP server | Yes | Yes | Yes | Yes |
| Audience targeting for experiments | Yes | Yes | Yes | Yes |
| Bayesian or sequential statistics | Yes | Yes | Yes | Yes |
| Website personalisation | Yes | Yes | Yes | Yes |
| Automatic traffic shifting to winners | Yes | Yes | Yes | |
| Feature flags and gradual rollouts | Yes | Yes | Yes | |
| Server-side experiments | Yes | Yes | Yes | |
| Ad A/B testing | Yes | Yes | ||
| AI optimisation | Yes | Yes | ||
| Multivariate and split URL tests | Yes | Yes | ||
| Popups & overlays | Yes | Yes | ||
| Quizzes & calculators | No | No | ||
| Links |
All Growth experiments tools
- Runs A/B and multivariate tests on websites to track visitor behaviour and optimise conversion rates.
- A/B testing and experimentation platform with tiered plans, a free trial and an official MCP server.
- A/B testing, web personalisation and on-site surveys all combined in one ecommerce-focused platform.
- Experimentation and personalisation platform for testing websites and features, sold through a sales conversation.
Put Growth experiments to work
How we rank
Every tool in a category is ranked by the same rule, worked out from the data we hold, not by who pays us. In order:
- How many of the category's shared features it has.
- Whether there is a free plan to start on.
- How open it is to AI: an API and an MCP server.
- Whether its pricing is public.
- Name, A to Z, when all else is equal.
When we add a tool or learn more about one, the ranking updates by itself.