You can use it to intercept, inspect & rewrite HTTP(S) traffic, Support capturing Flutter app traffic, ProxyPin is based on Flutter develop, and the UI is beautiful and easy to use.

• Mobile scan code connection: no need to manually configure WiFi proxy, including configuration synchronization. All terminals can scan codes to connect and forward traffic to each other.
• Domain name filtering: Only intercept the traffic you need, and do not intercept other traffic to avoid interference with other applications.
• Search: Search requests according to keywords, response types and other conditions
• Script: Support writing JavaScript scripts to process requests or responses.
• Request rewrite: Support redirection, support replacement of request or response message, and can also modify request or response according to the increase.
• Request blocking: Support blocking requests according to URL, and do not send requests to the server.
• History: Automatically save the captured traffic data for easy backtracking and viewing. Support HAR format export and import.
• Others: Favorites, toolbox, common encoding tools, as well as QR codes, regular expressions, etc.

Mac will prompt untrusted developers when first opened, you need to go to System Preferences-Security & Privacy-Allow any source.