SaveX is a mobile application that helps users get refunds when prices of purchased products drop by monitoring prices and invoking retailers' price match policies. It aims to charge users a 15% "success fee" on refunds to generate revenue while providing a valuable service. The marketing plan discusses targeting users interested in online shopping with low/average incomes. It outlines strategies like positioning the app as convenient and easy to use, and launching free and paid versions to attract users and collaborations with retailers to monitor prices. Key metrics like cashback claims, subscription growth and revenues will be used to evaluate the app's performance.