Downloadable software using artificial intelligence (AI) for simulating natural conversation; Downloadable software using artificial intelligence for writing content based on a theme; Downloadable software using artificial intelligence (AI) for summarizing texts; Downloadable mobile applications for engaging with users in natural language interaction to provide information, insights, recommendations, and assistance across various personal and commercial domains; Downloadable software for engaging with users in natural language interaction to provide information, insights, recommendations, and assistance across various personal and commercial domains