HttpKit - API & WebSocket4+

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 $19.99 yearly $49.99 lifetime (one-time purchase, no recurring billing) No free trial. Terms of Use: /terms-of-service Privacy Policy: /privacy-policy