Fiddler is not available for iPhone but there are some alternatives with similar functionality. The best iPhone alternative is Charles. It's not free, so if you're looking for a free alternative, you could try HTTP Toolkit or API Tester. If that doesn't suit you, our users have ranked more than 50 alternatives to Fiddler and seven of them are available for iPhone so hopefully you can find a suitable replacement. Other interesting iPhone alternatives to Fiddler are Proxyman, Surge for Mac, Proxygen and Pirni Pro.
Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).
HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.
Monitor, intercept and debug HTTP/HTTPS and WebSocket traffic on macOS, iOS, Windows, and Linux. Includes advanced features such as Breakpoint, Map Local/Remote, scripting, filtering, reverse proxy, DNS spoofing, and automation for backend development.
Working quietly on the Menubar, Surge is a high-performance HTTP/SOCKS5 proxy server. It is capable of intercepting and logging the summary of HTTP traffic, and meanwhile transmitting the traffic to other proxy servers according to the flexible rule system.
Proxygen is the best HTTP proxy tool for testing apps and debugging remote API endpoints right on your iPhone, iPad and Mac. And it’s built to delight you while doing it.
API Tester is the first mobile app to test any type of API on the go. Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, and HTTPS APIs completely for free, on iOS or Android.
Pirni Pro is a network security tool designed for iOS, and specifically for iPhone and iPod Touch devices. It is capable of intercepting traffic on a wireless network segment, capturing passwords, and regular expressions entered by the user.
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It doesnt log outgoing and incoming requests.