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See which changes
drive more conversions.

A/B testing and feature flags for developers. Compare signup flows, checkout steps, or backend logic, then use conversion results to decide what to ship.

14-day free trial. Integrate with PHP, JavaScript, or the REST API.

Workspace overview

Your workspace, experiments, and next steps at a glance.

Running experiments
2
Total experiments
3
Participants
12,480
Events
4

Running experiments

ExperimentParticipantsConversions
SIGNUP_FLOW8,240412
CHECKOUT4,240318
Dashboard preview. Illustrative data.
Mad Alfs

Will your next change
make a difference?

A new signup flow looks promising. A shorter checkout feels simpler. Run an experiment to see whether either helps more people convert.

Compare variants.
Measure the difference.

Show participants different versions of your change and track the same conversion goal for each. Compare the results to see which approach has evidence behind it.

CONTROLVariant ACHALLENGERVariant B

Illustrative comparison. Choose a winner when the statistical evidence supports it.

Control features
from one place.

Connect your code to a feature flag, then enable or disable it from Checkmango. Attach a value when your application needs more than an on or off switch.

NEW_CHECKOUT
Your appNew checkoutExisting checkout
Try the switchenabled: true

Interactive demo. Your application decides how to use each flag.

See what happened
before the conversion.

See which experiment a participant joined, which variant they saw, and what they did next. Explore Maya’s example journey to see how those events connect.

Maya Chen

Demo participant · maya_chen

10:00:00

Meet Maya. One participant, one history.

Your app registers Maya with a stable identifier. Her activity can now stay connected throughout the experiment.

  1. Participant registered

    maya_chen

Variant
Not enrolled
Impressions
0
Conversions
0
1 of 4

Go from experiment to evidence.

Set up your test, track the actions that matter, and review the results with your team. Explore the workspace below.

Experiments

Compare variants against a shared conversion goal. Review the evidence before choosing a winner.

Built for the people writing the code

The perfect solution for a cost-effective, no-fuss and developer-friendly A/B testing platform. We shall be using Checkmango for many years to come.

Run experiments where your code runs.

Keep your application in your stack. Use a PHP or JavaScript SDK to connect it to Checkmango, or use the REST API from another language.

Choose a plan for the traffic you test.

Start with the monthly request allowance you need. Every plan includes a 14-day free trial to connect your app and set up your first experiment.

Your allowance covers ingest requests, such as experiment enrollments and conversions. It renews monthly on both billing options. Pay yearly to save compared with 12 monthly payments.

Lite

Up to 100k Ingest API requests per month.

$29/month

USD · Billed monthly

Start free trial
Most Popular

Pro

Up to 1 million Ingest API requests per month.

$79/month

USD · Billed monthly

Start free trial

Ultimate

Up to 25 million Ingest API requests per month.

$349/month

USD · Billed monthly

Start free trial

Custom

Need a different request allowance? Tell us what you expect to track.

Questions before you start?

Have a question about your integration or plan? Ask us.

What can I test with Checkmango?

Test changes you can implement in code: a signup flow, a checkout step, or backend logic. Create two or more variants, choose a conversion goal, and compare how each version performs.

How do I connect my application?

Use a PHP or JavaScript SDK, or call the REST API from any language that supports HTTP requests. Your code enrolls participants, serves their assigned variant, and records conversions. You’ll need a developer to add the integration.

How do I choose a request allowance?

Estimate how many ingest API requests your application will send each month to record actions such as experiment enrollments and conversions. One visitor can generate several requests, so page views alone won’t tell you which plan to choose. The allowance renews monthly, even when you pay yearly. Contact us if you need help estimating your usage.

Can I try it before subscribing?

All plans include a 14-day free trial. You can cancel your subscription at any time from your organization’s billing dashboard.

Can I use feature flags without an A/B test?

Yes. Feature flags work independently of experiments. Give a flag a key, set it to enabled or disabled, and optionally store a value. Your application reads the flag through the API and decides which functionality to show.

When should I choose a winning variant?

A higher conversion rate alone does not establish a winner. Review the statistical results and allow enough participants and time for a meaningful comparison before making a decision.

Know what works. Test your next change.

Pick one change and a conversion goal. Start your 14-day free trial and turn that idea into an experiment.