RequestLab vs OpenAPI Viewer
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
RequestLab
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RequestLab is a simple, free, multi-platform tool designed for HTTP API development, debugging, and testing. Run and test your various HTTP requests against your endpoints and check the results. It is intended as a native alternative to programs like Postman, Thunder Client, Bruno, etc. for Apple devices. You can run RequestLab on your Mac, iPhone, iPad, and Vision Pro while enjoying the same functionality. Additionally, you have the convenience of sharing your requests between these devices using the import/export functionality. - Create and edit HTTP requests: GET, POST, HEAD, OPTIONS, DELETE, PUT, TRACE, CONNECT, PATCH - Supported authentication methods: Basic, Bearer - Import/Export from and to JSON format for sharing your request - No user tracking, no subscription, no login required. What happens on your device stays on your device.
OpenAPI Viewer
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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 ā including descriptions, parameters, request bodies, and responses ā 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 ā all without leaving the app. EXPORT AND SHARE Copy any request as a cURL command, JavaScript fetch, Swift URLSession, or Python httpx snippet ā 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 ā 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 ā 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
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Verdict
The clearest difference is in-app purchases: RequestLab at none against OpenAPI Viewer's 3. On price, update cadence, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. OpenAPI Viewer sells 3 one-off in-app purchases. RequestLab asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 25, 2026.
| Parameter | RequestLab | OpenAPI Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, Mac |
| Requires iOS | 17.0 ā better | 18.1 |
| Further details ā not scored | ||
| Size | 18 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Albrecht | Victor Manuel Puga Ruiz |
In-app purchases
RequestLab
No in-app purchases
OpenAPI Viewer
- Small Tip$1.99
- Medium Tip$4.99
- Large Tip$9.99
Questions
Is RequestLab free?
Is OpenAPI Viewer free?
Do RequestLab or OpenAPI Viewer have ads?
Which is updated more often, RequestLab or OpenAPI Viewer?
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