Marcus now supports English, Spanish, and Portuguese across the core app experience, including localized library content, daily practice, habits, and notifications. The Library has been redesigned around books, Stoic Path podcasts, and the citadel progress system, with cleaner navigation and richer session details. Habit tracking is now more complete, with custom routines, individual check-ins, reminder scheduling, and follow-up notifications when a habit is missed. Audio playback, analytics, onboarding, premium gates, and notification handling have been refined to make the app feel more stable, personal, and production-ready.