Spar

Spar is an AI conversion rate optimization (CRO) and A/B testing platform for Shopify, broader ecommerce, and SaaS teams. It profiles any storefront, grounds recommendations in your funnel data, behavior signals, reviews, public opinion, and brand context, then turns specific friction points into prioritized, test-ready A/B variations, each citing the evidence it came from. Spar runs and measures its own tests using sequential statistics, flagging a winner once a variation reaches 95% probability of being best.

Variants are scoped JavaScript, so your theme and app code stay untouched. It works alongside existing experiment and task management tools. Nothing ships without your approval.