Smart applications are software programs designed to perform tasks intelligently and efficiently, often using data and algorithms to enhance user experience. They can learn from user behavior, adapt to preferences, and automate routine tasks, making them more useful over time. Examples include virtual assistants like Siri and Google Assistant, which help users manage their schedules and answer questions. These applications often utilize technologies such as artificial intelligence and machine learning to analyze data and improve functionality. They can be found in various domains, including finance, healthcare, and smart home systems, providing personalized solutions and increasing productivity for users.