Proxygen6.6 - App Store

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.

Features
. Send iOS device traffic to remote Mac
. Write JavaScript to modify proxied traffic
. Store state in variables for use in Editor
. Match and replace headers and body data
. Test API endpoints with assertions
. Transform data with custom recipes
. Syntax highlighting HTTP message editor
. Message history with powerful filtering
. WebSocket and SSE message capture
. Store all data in documents

SEND TO MAC
Easily capture HTTP messages from an iPhone or iPad on your Mac. Traffic is mirrored to the paired Mac over local network even when the iOS app is not active. The Mac app can intercept and edit data of requests and responses before they are forwarded. No more futzing around with Wi-Fi proxy settings and trusted certificates.

SCRIPTING
Write JavaScript code that modifies proxied traffic. Scripts have access to requests and responses, letting you rewrite headers, URLs and body content, inject data, or implement conditional logic that goes beyond what static rules can express.

SYNTAX AWARE EDITOR
Edit requests from the message history or create new to any target. All previously sent requests are kept in the project file so you can return to your work later. The editor uses Tree-sitter for fast language parsing and syntax highlighting. It handles decoding of HTTP content automatically, letting you focus on testing the remote API.

SERVER GRADE PERFORMANCE
The magic lies in a little custom HTTP proxy that the iOS app runs in a local VPN extension. This proxy was developed using SwiftNIO, a framework for bizarrely fast asynchronous network applications. The proxy can perform TLS Manipulator in the Middle (MitM) to see inside HTTPS connections and apply custom logic to each message.

To put it bluntly, you’ve probably never seen a HTTP proxy this fast before. And you likely won’t notice that your web browsing is even proxied at all.

PRIVACY
Proxygen contains no third party frameworks for crash reporting or analytics. Note that Proxygen is a TLS MitM proxy, which means that it sees HTTPS network traffic in plain text. This data is transferred from the proxy to the Proxygen app and stored as part of the project document. Make sure you handle the documents accordingly, as they may contain sensitive data such as session tokens and login credentials.

Privacy policy
https://proxygen.app/docs/privacy

Terms of Use
https://proxygen.app/docs/terms

Device Mockup created from https://deviceframes.com/templates/iphone-13

Version History • Prepares the app for an upcoming device that we shall not name here.
• Other visual fixes and improvements. 6.6 Sep 21 • Adds support for iOS 27. Built with Xcode 27.
• A new launch screen on iOS 27 with actions to create a new document and mirror traffic to a computer.
• Visual fixes and other improvements. 6.5 Sep 16 • The Match and Replace and File options in rewrite rules no longer require a purchase.
• Add Rewrite Rule is available again in the History menus.
• Fixed a crash when adding a host in the History filter.
• Fixed a crash when viewing a message body as a tree on iOS 16.
• Visual fixes and other improvements. 6.4.1 Sep 11 • Text mode is now available for messages with a binary body, showing the message head above the body in hex.
• Send to Mac now verifies both the Mac and the device, and identifies Macs by fingerprint when pairing.
• Send to Mac reconnects on its own after the Mac app quits or restarts.
• Existing Send to Mac pairings need to be created again after updating.
• MCP tool calls are shown in the Console.
• Visual fixes and other improvements. 6.4 Aug 26 • Modified messages are marked in History.
• Rewrite rules can now use a file as message body.
• Improvements to Protobuf decoding.
• Major performance improvements to HTTP message handling and document storage.
• Visual fixes and other improvements. 6.3 Aug 14 • Improved Hex view with byte coloring and selection.
• Visual fixes and other improvements.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 6.2 Jul 14 • Improvements to auto decoding in Transform tool.
• Fixes to handling of text encodings.
• Visual fixes and other improvements.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 6.1 Jul 2 TEST TOOL
• New Test tool that supports scripting, assertions and variable extraction.
• Supports all testing payloads and options you're already familiar with.
• The scope of functionality built into this tool is truly something that has never been done before in an iOS app. It took years of work to get to this point. I hope you like it as much as we do.

TRANSFORM TOOL
• Convert text or binary input data using transform recipes of multiple operations.
• Auto decoder that automatically finds a chain of operations that decodes given data.
• Lets you save current transform recipe as a favorite to use as part of testing.

• New Xcode color theme.
• Allows using {{variable}} syntax in input fields of Authentication and Rewrite rules.
• Adds new transform operations for data decoding, string escaping and converting charset.
• Improvements to navigation in all tools.
• Visual fixes and other improvements.

Changes in this version:
• Fixes to Zstandard decompression.
• Fixes to decoding of binary formats.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 6.0.1 Jun 26 TEST TOOL
• New Test tool that supports scripting, assertions and variable extraction.
• Supports all testing payloads and options you're already familiar with.
• The scope of functionality built into this tool is truly something that has never been done before in an iOS app. It took years of work to get to this point. I hope you like it as much as we do.

TRANSFORM TOOL
• Convert text or binary input data using transform recipes of multiple operations.
• Auto decoder that automatically finds a chain of operations that decodes given data.
• Lets you save current transform recipe as a favorite to use as part of testing.

• New Xcode color theme.
• Allows using {{variable}} syntax in input fields of Authentication and Rewrite rules.
• Adds new transform operations for data decoding, string escaping and converting charset.
• Improvements to navigation in all tools.
• Visual fixes and other improvements.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 6.0 Jun 19 • Allow pairing multiple computers for sending traffic to.
• Add filtering using a sitemap that shows a tree representation of visited traffic.
• Allows setting up authentication for matching requests. Basic Auth, API Key, Bearer Token, JWT, Digest and NTLMv1/v2 are available.
• Add support for decoding PHP serialize, Java serialization, Ruby Marshal, Python pickle, ASN.1 BER/DER and WBXML.
• Allow exporting specific messages to HAR, Charles, Mitmproxy and Proxyman files.
• Add connection monitor next to console tab.
• Visual fixes and other improvements.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 5.5 May 31 • New tree view display mode to inspect message data.
• HTML and JavaScript have tree view and beautified code display modes.
• Support for decoding binary formats in message history. Amazon Ion, BSON, CBOR, FlexBuffers, gRPC, Keyed Archive, MessagePack, Property List, Protobuf, Smile, Thrift, and UBJSON are currently supported.
• Other visual fixes and improvements.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 5.4 May 25 • Target address override in rewrite actions allows redirecting requests.
• Control Center button to toggle Send to Mac.
• Menu action to copy transaction (request and response) as text.
• Copy as cURL from message history and paste from cURL in Editor. 5.2 May 12 • Send to Mac now handles transmission of large body data like video.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 5.1 Apr 22 VARIABLES
• Store values such as auth tokens and identifiers in environment variables. Then use them in requests in Editor tool using {{name}} syntax.
• New getVariable and setVariable utility functions in scripting.

NEW COLOR THEMES
• Many new editor themes such as Dracula, Nord and Monokai.

Notice how we bring new features and major improvements in every app update? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 5.0 Apr 8 • New tunneling of device traffic to HTTP proxy. All HTTP/HTTPS traffic leaving the device is now captured in Proxygen. Note that certificate pinning in apps can still prevent HTTPS inspection.
• Adds capture of SSE message in Sockets tool.
• Adds option for DNS server override.

Notice how we bring new features and major improvements in every app update, instead of just fixing crashes and redesigning paywalls? If you like Proxygen app and it helps you debug network traffic then please tell your friends and colleagues about it. That would help a lot! 4.5.0 Mar 17 • Fix issue in opening document.
• Fixes to text editing in editors.
• Visual improvements. 4.4.1 Mar 9 • Write JavaScript code to modify proxied traffic. Scripts have access to URL, headers and body data. Use your local files as body data.
• Various small fixes and improvements. 4.4.0 Mar 3 • Add schemaless Protobuf decoding to message viewer.
• Update Tree-sitter syntax highlighter to latest version.
• Various small fixes and improvements. 4.3.0 Feb 15 • Fix text layout in message editors. 4.2.2 Feb 7 • Fix a potential crash when viewing JSON data. 4.2.1 Jan 15 • Add support for HAR (HTTP Archive), Charles Proxy, Proxyman and Mitmproxy file formats. Proxygen can now open documents, and import or export in any of these formats.
• Small visual improvements. 4.2.0 Jan 8 • Use wildcards in match and replace request URI field.
• Fix an issue that prevented connecting through the proxy. 4.1.1 12/10/2025 • Add search and replace to all message editors.
• Add client certificate support for mTLS connections.
• Small bug fixes and visual improvements. 4.1.0 12/04/2025 • Fix purchase screen for iOS only option. 4.0.2 11/23/2025 • Update pricing options 4.0.1 11/21/2025