API Zen vs SendMan

API Zen brings the convenience of HTTP API endpoint testing on the go. With its intuitive request composer and detailed response information, it helps developers test endpoints with ease. Main features • Simple and intuitive request composer and viewer • Supports headers, request parameters, request body with JSON, XML, raw input, forms with file, image attachments, multipart and binary data • Organize endpoints into workspaces and projects • Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only. • Seamless switching between local and iCloud workspaces • Option to add custom HTTP methods per project • Detailed response information which includes headers, cookies, metrics and connection information • View raw response with syntax highlighting • Preview HTML response output as web page • View all response history • SSL validation per request • Environment group with variables per workspace with option to select different environment per request • Supports dark mode • Import/Export workspace data API Zen is free for use. The app accepts optional donations which supports the development work.

SendMan is a full-featured API client for iPhone and iPad — build, send, and test HTTP requests anywhere, without opening your laptop. Debug a REST endpoint on the train, test a GraphQL query between meetings, or inspect a live WebSocket: SendMan puts a complete API testing toolkit in your pocket. Built natively for iOS, it's fast, works offline, and is made for developers, QA engineers, and mobile teams who need real API tooling on the go. BUILD & SEND REQUESTS - Full HTTP request builder — GET, POST, PUT, PATCH, DELETE & more - Add headers, query params, and request bodies in seconds - Reuse {{environment}} variables across URL, headers, params & body - Write tests and validate responses automatically - Generate ready-to-use code from any request ORGANIZE YOUR WORK - Save and group requests into Collections - Switch between multiple Environments and configurations - Full request History with status codes and response times - Instant search across everything GO BEYOND REST - GraphQL — run queries, mutations, and subscriptions - WebSocket — test real-time connections live - Traffic Capture — intercept and inspect HTTP/HTTPS traffic in real time - Monitor — run requests on a schedule and watch performance DEVELOPER TOOLS - Mock Data — auto-generate realistic JSON to test your APIs - JSON Diff — compare two responses and spot every change instantly - Dashboard with success, failure, and average response-time metrics - Response insights, charts, and performance tracking FULL REQUEST CONTROL - Fine-tune timeouts, max response size, and HTTP version - Toggle SSL certificate verification for self-signed certs - SSL/TLS key logging for deep debugging - Light & dark themes plus custom color palettes PRIVATE BY DESIGN Your requests, history, and data stay on your device. SendMan works offline and never sits between you and your APIs. Privacy Policy: https://sendman.netlify.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/