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A/B Test Experiment Design Generator
Describe the hypothesis, primary metric, baseline rate, MDE, and traffic available. Get a power analysis with the formula shown, a pre-committed analysis plan, and the specific SRM and balance checks to run pre-test, during-test, and pre-analysis.
✓ Sample size rounded UP, with duration in days/weeks✓ Pre-commits the analysis plan and decision rule before the test runs✓ Flags tricky metrics (high-variance revenue, right-censored retention, novelty-prone)
Results in ~20 seconds · Saves ~45 minutes per experiment