Interactive apps are software applications designed to engage users through direct interaction. They often feature touch screens, voice commands, or gestures, allowing users to manipulate content in real-time. Common examples include games, educational tools, and social media platforms, which encourage user participation and feedback. These apps can be found on various devices, such as smartphones, tablets, and computers. They utilize elements like quizzes, polls, and simulations to create an immersive experience. Popular interactive apps include Kahoot! for learning, Duolingo for language practice, and Instagram for social networking, all of which enhance user engagement and enjoyment.