Paperline is a macOS application that helps users build native iOS apps with AI, using Apple’s Swift, SwiftUI, and Xcode technologies. Instead of working in a visual canvas or editing code manually, users describe an app or feature in chat, and Paperline’s AI agent generates and updates a real Xcode project. It can create screens, manage app logic, refine layouts, and develop features, while showing code and interface changes as they take shape.

Projects run locally on a Mac and can be tested in built-in simulators or on a connected iPhone or iPad. Paperline also guides users through setup, including installing Xcode and the iPhone simulator when needed, and can archive, sign, and upload apps for App Store submission. It supports existing standard Xcode projects and offers both a free plan with a user-provided API key and a paid Pro plan with monthly credits, additional agent capabilities, and deployment options. Project files are stored locally; necessary data may be sent securely to Paperline’s servers during syncing or building.