Surge 4 for iOS
Surge is a network toolbox for power users and a high-performance HTTP/SOCKS5 proxy server. It is capable of intercepting and logging the summary of network traffics, and meanwhile transmitting the traffic to other proxy servers according to the flexible rule system. Multiple proxy protocols are supported including HTTP, HTTPS, SOCKS5, SOCK5 over TLS.
Launching the Dashboard, Surge then becomes a sophisticated HTTP debugging tool. You can monitor all recent network requests, adjust proxy rules, rewrite requests and manipulate local DNS mapping.