ByteSniffer vs HttpKit

ByteSniffer is a professional network debugging tool designed for iOS developers, QA engineers, and networking professionals. It supports real-time capture and analysis of HTTP/HTTPS, SSE, WebSocket, TCP, and UDP traffic. You can inspect request headers, response content, real-time messages, bidirectional raw data, and data in multiple formats including Hex, Text, and JSON. ByteSniffer also provides useful tools such as Host filtering, capture history, full-text search, sharing and export, request replay, content rewriting, breakpoints, and JavaScript scripting. These features help you quickly troubleshoot API errors, connection issues, and data transmission problems. HTTPS and WSS traffic analysis requires installing and trusting the MITM certificate provided by the app. Some advanced features require Pro access. Please use ByteSniffer only with applications and network environments that you own or are authorized to test. Membership Purchase: Unlock permanent access for only CNY 19.9, including MITM, HTTPS, SSE, WebSocket, TCP, UDP, Replay, Rewrite, Breakpoints, and Scripts — for about the price of a cup of milk tea. Privacy Policy: https://www.kdocs.cn/l/cbOGcxNm6ic9 User Agreement: https://www.kdocs.cn/l/cnVXUBVNwGOd

HttpKit is a native REST API client built from the ground up for iPhone fast, offline, and completely private. Build, send, and debug HTTP and WebSocket requests without ever creating an account or syncing to the cloud. Every request lives entirely on your device. No telemetry, no tracking, no server in the middle just a fast, focused tool for testing APIs the way a first-party Apple app would feel. REQUEST BUILDER - All HTTP methods: GET, POST, PUT, PATCH, DELETE, OPTIONS, HEAD - Every body type you need: JSON, raw text, XML, HTML, form URL-encoded, multipart form-data, and raw binary/file uploads - Query parameters and headers with enable/disable toggles - {{variable}} placeholders resolved live as you type AUTHENTICATION, BUILT IN - Basic Auth, Bearer Token, API Key - AWS Signature Version 4 (SigV4) for signing requests to AWS services - JWT Bearer — sign a token client-side with HS256/384/512 and your own secret - OAuth 1.0a with HMAC-SHA1 signing WEBSOCKETS - Dedicated WebSocket editor with Connect/Disconnect and a live, scrolling transcript - The same auth and header configuration you use for HTTP applies to the handshake ENVIRONMENTS & VARIABLES - Named environments with one active at a time - Three-tier variable scope — environment, collection, and per-request — so the most specific value always wins - Secret variables are stored in the iOS Keychain, never in the request database ORGANIZATION - Nested collections and folders, drag-to-reorder - Full-text search across your requests - Duplicate any collection, folder, or request in one tap HISTORY - Every send is saved automatically - Search past requests, tap to inspect the full response, swipe to re-run or delete - Configurable retention so history never grows unbounded RESPONSE VIEWER - Body, headers, cookies, and timing/size metrics in dedicated tabs - Raw view for anything the formatted views don't cover - Cancel in-flight requests at any time BUILT FOR IPHONE - Native Cupertino design — no web views, no desktop UI squeezed onto a small screen - System, light, and dark themes; adjustable editor font size - SSL verification toggle and configurable timeout for testing against self-signed or slow environments Whether you're a backend developer debugging an endpoint between meetings, a mobile developer testing your own API from the same device as your app, or anyone who wants a REST client that respects your privacy, HttpKit is built to feel instantly familiar and completely yours. Premium feature Requires a subscription or one-time purchase. $4.99 weekly $24.99 yearly $49.99 lifetime (one-time purchase, no recurring billing) Terms of Use: https://httpkit-web.vercel.app/terms-of-service Privacy Policy: https://httpkit-web.vercel.app/privacy-policy