Skip to main content

​
Paperline Doctor

Paperline Doctor runs automatically every time you launch the app to verify your development environment. During first launch, it’s part of the onboarding flow. After that, if any tools are missing, a warning appears below the chat input so you can fix issues without interrupting your workflow.

​
System Checks

Paperline Doctor checks three main components:
Required: Xcode 16 or laterXcode is Apple’s development environment. Paperline uses Xcode’s build tools to compile Swift code and run the iOS Simulator.If not installed:
  • Click “Open App Store” button in Paperline
  • Or search for “Xcode” in Mac App Store
  • Download takes approximately 12GB
  • Open Xcode once after installation to accept the license
Compilers and build utilities required for iOS development.Click “Install” button and Paperline handles the rest.
Required: iOS SDK and at least one iPhone simulator
  • iOS Runtime — The iOS SDK for building apps
  • iPhone Simulator — Virtual iPhone for testing (e.g., iPhone 17 Pro)
Click “Install” and Paperline will:
  1. Download the latest iOS runtime via xcodebuild -downloadPlatform iOS
  2. Create an iPhone 17 Pro simulator automatically

​
Status Indicators

StatusMeaning
GreenComponent is installed and ready
RedComponent is missing — click to install
PulsingInstallation in progress

​
Troubleshooting

Open Xcode from Applications folder and accept the license agreement. You may need to enter your Mac password.
iOS runtime download is several GB. It can take 10-30 minutes depending on your internet connection. Progress is shown in the Paperline UI.
  1. Open Xcode 2. Go to Window → Devices and Simulators 3. Click + to add a new simulator 4. Click “Check tools” in Paperline to refresh