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A/B Significance Tester

A/B Significance Tester is a complete statistical analysis tool for marketers, data analysts, and product teams running A/B tests. It lets users input visitor and conversion data for two test variations (A and B), automatically calculating conversion rates, uplift percentage, Z-score, P-value, and overall confidence level. The app visually displays the results on a dynamic confidence gauge with a smooth animated needle and color-coded significance zones (red/yellow/green). It also saves user inputs in localStorage for quick re-access, validates input consistency (e.g., conversions cannot exceed visitors), and provides contextual summaries like “Statistically Significant Winner” or “Inconclusive.” The layout is fully responsive, includes modern 3D-style cards and gradients, and works entirely offline without any external dependencies or API keys.

Install A/B Significance Tester at its install page.

Category: Analytics