iPhone Duo Developer Resources

Official Apple documentation, videos, design resources, and tools for iPhone Duo development, organized in one place.

Last updated September 19, 2026

Apple Developer

iPhone Duo Developer

Documentation

Developer Forums

Videos

Design for iPhone Duo

Prepare your app

Adaptive layouts

Vertical Bars

Multiple Displays

Camera

Design

Human Interface Guidelines

Figma

Sketch

Product Bezels

Tools

Xcode

Simulator

Device Hub