Kinnu is not just a well-designed and engaging app, it takes a truly creative approach to learning. The way that spaced repetition is implemented here yields spectacular results, but the content is also well-written and takes the learning experience way beyond bare memorization. The UX is really cool already, and given current trajectory, is bound to get better and better. The goal of uprooting social media/scrolling addiction in as many people as possible is a lofty one that we should all support!