M+C Saatchi Performance partnered with Headspace to enhance organic conversion rates through App Store Optimisation. The goal was to improve conversions, identify effective creative elements via A/B testing, and enhance user engagement with optimised visuals. We tested multiple screenshot variations across Apple and Google Play Stores, analysing which designs drove the most downloads. After several rounds of A/B tests, Headspace achieved a 34% increase in conversion rates. Users responded best to social proof, key feature highlights, bright colors, and concise captions.