OpenAPI Viewer vs Schemely

OpenAPI Viewer is the easiest way to explore, test, and understand OpenAPI 3.0 and 3.1 specifications on your Apple devices. Whether you're integrating a third-party API, reviewing your team's documentation, or testing endpoints on the go, OpenAPI Viewer gives you a clean, native interface built for developers. EXPLORE YOUR API Open any JSON or YAML OpenAPI file and instantly browse all endpoints organized by tag. Search across operations, schemas, parameters, and examples in seconds. View rich documentation for every endpoint — including descriptions, parameters, request bodies, and responses — with schema constraints, validation rules, and example values displayed clearly. TRY IT OUT Send real HTTP requests directly from the app. Fill in path, query, header, and cookie parameters, provide a request body, configure authentication, and hit Send. View the response body, status code, duration, and validation results — all without leaving the app. EXPORT AND SHARE Copy any request as a cURL command, JavaScript fetch, Swift URLSession, or Python httpx snippet — ready to paste into your terminal or codebase. BUILT FOR APPLE PLATFORMS A thoughtfully designed native UI makes even complex, sprawling APIs easy to read. Color-coded methods, clear badge indicators, and structured layouts — built for Apple platforms from the ground up. FREE TO USE OpenAPI Viewer is completely free with no subscriptions or paywalls. If you find it useful, you can support development through an optional tip jar — entirely your choice. KEY FEATURES • Open JSON and YAML OpenAPI 3.0 and 3.1 specifications • Browse endpoints by tag with HTTP method filters • Full-text search across operations, schemas, examples, and headers • Send real HTTP requests with a built-in inspector • Configure Bearer, API key, Basic, and OAuth credentials • Request history • Copy requests as cURL, fetch, URLSession, or httpx • Schema viewer with constraints, enums, and examples • Native on iPhone, iPad, and Mac

Schemely is a link tester for iOS developers and QA. Take any URL, generate a tappable link, and actually tap it to see how a URL scheme or Universal Link behaves — the reliable way to reproduce real-world taps. Why tapping matters Universal Links behave differently depending on how they are opened. Schemely reproduces the real paths: • External — hands the URL to the system (opens the target app, or Safari). • Web tap — renders a real anchor in a web page and taps it, the most reliable way to trigger a Universal Link. Features • AASA Inspector — fetch a domain's apple-app-site-association and check whether a URL is a Universal Link, and which applinks rule it matches. • Result diagnostics — when a link doesn't open, see why and what to check next. • Instant URL kind detection: web URL, custom scheme, or malformed. Unsafe schemes (javascript/data) are blocked. • Clear result feedback: opened, no handler, opened from an anchor tap, or not a Universal Link. • A QR code for every link — scan to open and verify on another device. • History and favorites, stored entirely on your device. • Share from any app — send a URL to Schemely via the share sheet to verify it. • Copy as a rich link or a plain URL. • English and Japanese. Privacy Schemely collects no data. Everything stays on your device.