HttpNinja: REST API Client

Test REST APIs instantly with HttpNinja – a fast and powerful API tester.

Looking for a Postman alternative on Android? HttpNinja is a complete REST API client and HTTP testing tool that lets you send requests, automate workflows, and generate code – all in one app.

Perfect for developers, QA engineers, and students who need a reliable API testing app anytime, anywhere.

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WHY HTTPNINJA?

✓ Free and powerful API testing tool

✓ Code generator for 14 languages

✓ OAuth 2.0, JWT & AWS authentication support

✓ Workflow automation with retry logic

✓ Built-in mock server & WebSocket testing

✓ 50+ test data generator types

✓ Works offline

✓ Privacy-focused (no tracking)

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KEY FEATURES

CODE GENERATOR

Generate production-ready code instantly in Python, JavaScript, TypeScript, Kotlin, Java, Go, Swift, C#, PHP, Ruby, Rust, Dart, and cURL.

WORKFLOW AUTOMATION

Chain requests, extract and reuse data, and automate API workflows with built-in templates.

AUTHENTICATION

Supports OAuth 2.0 (all grant types), JWT generation, and AWS Signature V4.

TESTING & MOCK

Includes assertions, test suites, mock server, WebSocket testing, and performance testing tools.

VARIABLES & DATA

Use global, environment, collection, and local variables with dynamic values like timestamps and UUIDs.

DOCUMENTATION

Generate Markdown, HTML, and OpenAPI 3.0 documentation. Export to Postman collections.

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CORE FEATURES

• All HTTP methods (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)

• Request builder with headers, params, and body

• JSON viewer with syntax highlighting

• Collections and request organization

• Import/export via JSON and QR code

• Request history and search

• Dark and light theme (Material Design 3)

• Tablet support and split screen

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PRIVACY

HttpNinja is designed with privacy in mind:

• Works fully offline

• No tracking or telemetry

• All data stays on your device

• No cloud sync required

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PERFECT FOR

• Developers and backend engineers

• QA testers and DevOps

• Students learning API development

• Startups and small teams

• Anyone looking for a mobile API testing tool

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USE CASES

• Test REST APIs

• Generate code in multiple languages

• Automate workflows

• Test OAuth and JWT authentication

• Mock backend services

• Learn API and HTTP concepts

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Download HttpNinja today and test APIs anytime, anywhere.

No subscription. No limits. Just powerful API testing on your device.

Support: [email protected]