Vivi is praised for its AI-powered capabilities, offering a versatile and interactive experience. Users appreciate its ability to answer questions, assist in creative tasks, and provide companionship, making it a valuable tool for both entertainment and productivity. The app's user-friendly interface and diverse range of AI bots, including those for writing, cooking, and even chatting with famous figures, are highlighted as key strengths. While some users note occasional speed issues, the overall feedback is overwhelmingly positive, emphasizing its practicality and effectiveness in daily life.