This document proposes an app called Catglish that teaches foreign languages using cute cat images and memes. It argues that cats are effective for grabbing attention, keeping students focused, making the learning process fun and reducing anxiety. The app would provide language lessons, tests and sharing features. It aims to teach English and other languages to a target audience of 20-30 year olds in Russia who love cats and use smartphones/tablets. The development plan is outlined along with monetization through in-app purchases and ads.