Quantumult X for iPhone

Overview and purpose

Quantumult X is a modern networking utility built for both software engineers and people who rely on proxies. It blends deep traffic inspection and modification tools for troubleshooting and development with broad proxy protocol support for everyday use, delivering a flexible, configurable networking solution.

Tools for developers

• Customizable DNS handling and resolution rules to fit development and testing scenarios
• Rule-driven HTTP transformations and URL rewriting for request/response manipulation
• Runtime TLS interception with Man-in-the-Middle decryption to inspect encrypted traffic
• Extensive HTTP logging and session capture for debugging and performance analysis

Features for proxy users

• UDP relay capability for applications requiring datagram forwarding
• Support for Shadowsocks tunneled over WebSocket with optional TLS wrapping
• Compatibility with Shadowsocks using obfuscation plugins (obfs-tls, obfs-http)
  Quantumult X aims to provide a tailored networking experience by combining these protocol options with flexible routing and policy controls.

Recommended alternative: Super Proxy (free)

Super Proxy is a no-cost app that can tunnel your apps and simplify proxy setup.

• A clean, user-friendly interface that makes navigation and basic configuration straightforward
• Fundamental accessibility options and simple controls designed to minimize setup friction