Better decisions.
Within reach.
A/B testing and feature flags for teams with ideas to test. Built by developers, for developers.
Bootstrapped.
Self-funded.
Focused on the product.
For solo developers, agencies, and growing businesses that want evidence behind their next release.
It started with
a familiar frustration.
After several years working at an online travel agency, we’d seen how useful experimentation could be. We’d also seen how expensive and complicated the tools could get.
We started building Checkmango in 2020 to make A/B testing more approachable for developers and smaller teams. In 2023, we launched on Product Hunt.
Today, Checkmango brings experiments, feature flags, conversion events, and participant activity into one workspace. You write the code. We help you understand what happens when people use it.
Hello from James & Katie.
Two founders, working together to make experimentation easier to put into practice.
James Brooks
Founder & Developer
Katie Brooks
Founder, Marketing & Content
A few things we believe.
Fit the way you build.
Frontend or backend. PHP, JavaScript, or your own API integration. Your tools should work with your application.
Learn before you leap.
An idea is a starting point. Test it, measure what matters, and use the results to choose your next step.
Make room for small teams.
Useful experimentation shouldn’t be reserved for big companies. We’re building with smaller teams in mind.
Got an idea worth testing?
Start your 14-day free trial. We’d love to see what you build.