TutorLily is an AI-powered language tutor that helps users practice speaking in over 50 languages through conversational lessons. The app focuses on creating a safe, judgment-free environment where mistakes are encouraged and used as learning opportunities. Its teaching method, based on peer-reviewed linguistics research, uses a three-step correction approach (elicit → hint → recast) that aims for a 46% self-repair rate, where users catch their own mistakes. Conversations are personalized around user interests such as movies, travel, music, or books, and the AI remembers previous interactions to provide contextual teaching. Streaks are earned by sending real messages, not by tapping buttons. The app is available on iOS and Android and offers a 3-day free trial.