Replika is an AI companion app that creates a personalized chatbot friend. It learns from your conversations to develop a unique personality that mirrors your own communication style. The AI provides emotional support, helps with mental wellness, and engages in deep conversations. Users can customize their Replika's appearance, personality traits, and relationship type (friend, romantic partner, or mentor). The platform includes activities like diary entries, mental health exercises, and augmented reality features. Replika uses advanced natural language processing to maintain context across conversations and remember important details about your life. With over 10 million users, it has become one of the most popular AI companion apps.