Rozum is an AI‑powered language learning app that focuses on expanding users' vocabulary through curated word stacks and spaced‑repetition review. The app pairs this with AI‑driven speaking practice, offering instant pronunciation feedback from a virtual tutor named Linoo. Learning takes place in short, structured micro‑sessions that can be used offline, allowing learners to study at their own pace. By combining vocabulary building, pronunciation training, and AI guidance, Rozum aims to improve overall fluency for a wide range of learners.