SayDuo: AI Language Tutor is an app that uses an artificial‑intelligence coach to help learners improve oral skills by holding realistic role‑play conversations. The AI generates personalized lesson paths, provides instant pronunciation scores and word‑by‑word corrections, and tracks progress across speaking, vocabulary and grammar. Daily topics and adaptive learning plans let users practice at any level, while streaks and reward systems encourage consistent use. The app’s focus on natural dialogue and immediate feedback distinguishes it from vocabulary‑drill based programs.