Our literature review began by doing a broad overview of research related to learning in the context of a mobile application and ways to optimize time-constrained learning. From there we focused our review into these three major research areas: mobile learning, memory and forgetting, and spaced practice. Research on mobile learning literature helped to provide insights into the application of learning science principles and user-design considerations for a mobile application. Memory and forgetting are key cognitive areas that need to be addressed when dealing with retention and studying. Finally, research regarding spaced practice can be used to help inform how we can design the application to increase memory and fluency. Foundational ideas in these three research areas informed our modeling and further ideation in our design.