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Eighteen free calculators, guides to A/B testing and attribution, honest tool comparisons, and walkthroughs of the product. Start wherever your question is.
Calculators and tools
Eighteen free tools that run in your browser. No signup required.
A/B testing guides
The statistics you need, and the traps that invalidate a result.
Analytics and attribution
Measuring what visitors do, and tying the result back to revenue.
AI agents
Pointing Claude or Codex at your funnel, and what it can actually do once connected.
Comparisons
Honest head-to-heads, including where the other tool wins.
Walkthroughs and help
Setup, troubleshooting, and answers to the common questions.
Try it on your own website.
Add the script, find where visitors leave and test a change to fix it.
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/pricing · headline testWinner found
Control$1.12
Variant B$1.79
+59.4%