Capture and analyze HTTP(S) traffic on your mobile device. Easily connect terminals via QR code, filter traffic, and process requests with custom scripts or rewrites. Decrypt sensitive data and block unwanted requests.
Reviews of ProxyPin are mostly positive: the Developer Tools app is rated 4.5/5 from 112 App Store ratings. What users like most: free and open-source software, powerful traffic capturing capabilities. Top complaints: certificate installation issues, HTTPS packet capture failures. Summarized from real user reviews.
1.3.3
September 29, 2026
Bug fixes: - Fixed an issue where HTTPS request bodies could be lost after a CONNECT tunnel was established What's New: 1. Added a built-in MCP server so AI assistants (e.g. Claude) can inspect and debug captured traffic; 2. Added built-in dynamic variables for environments; 3. Request rewrite rules can now be reordered with move up/down actions; 4. Fixed a crash triggered by the Windows context menu; 5. Fixed multi-value headers (e.g. multiple Set-Cookie) being incorrectly merged when handled by scripts or rewrite rules; 6. Fixed h2c (plaintext HTTP/2) capture, non-ASCII domain normalization, and certificate validation failures for IP hosts; 7. Fixed an iOS 13 crash, dropped bodies for close-delimited responses
More10 issues
Certificate installation fails despite enabling proxy
HTTPS error -2 persists after certificate reset
12 requests
Response body rewriting capability
Request replay with custom count and delay
ProxyPin allows you to capture and analyze HTTP(S) traffic directly from your mobile device. It enables features like proxy setup via QR code, domain filtering, and the ability to write custom JavaScript scripts to process requests and responses.
Key features include easy mobile scan code connection, domain name filtering to intercept only necessary traffic, support for JavaScript scripting, request rewriting, local request mapping, automatic decryption of HTTP message bodies with an AES key, and the ability to block specific requests.
Yes, ProxyPin is a free application. The provided information indicates it does not have in-app purchases or advertisements, suggesting a completely free user experience.
The app is designed for mobile devices, facilitating traffic capture and forwarding between terminals. While specific OS versions aren't detailed, its functionality implies compatibility with modern iOS and Android operating systems that support proxy configurations.
ProxyPin is highly useful for debugging network-related issues. You can inspect the exact requests and responses sent by your applications, rewrite them to test different scenarios, decrypt sensitive data, and block unwanted traffic to isolate problems.
