To build an app like ChatGPT, you need a team of skilled developers with expertise in natural language processing and artificial intelligence. The app should understand natural language and provide intelligent responses that engage users. Using frameworks like Flutter and React Native, developers can create apps that work seamlessly across different devices. It's also important to consider the user's needs, with features like real-time messaging, personalization, and customization. Building an app like ChatGPT can be a smart investment for businesses looking to stay ahead in the competitive market of intelligent apps.