Best Api Reference Apps

HTTPBot: API & HTTP Client

API, MCP & WebSocket Debugger

Free

This app allows users to send HTTP/HTTPS requests and connect to WebSockets, making it easy to debug APIs on the go. It supports various response formats, collaboration features, and authentication methods, streamlining API development and testing.

API Bot

API calls at your fingertips

Free

This tool empowers mobile developers to build and test APIs directly on their phones. It leverages on-device machine learning to analyze API results, identify patterns, and troubleshoot issues. Organize requests, manage data formats like JSON and XML, and collaborate with your team.

npn.dev

An HTTP client that works

Free

This tool allows developers to explore and test HTTP APIs efficiently. It prioritizes speed and accuracy for a seamless development experience.

REST API Client

REST API and GraphQL Client

Free

This tool allows users to send and analyze API requests with detailed response information. Customize requests with parameters, authorization, headers, and various body types. Organize and manage your saved requests efficiently.

Data Axle Reference Solutions

by Data Axle Inc.

Free

Access comprehensive U.S. business and consumer data for research and opportunity identification. Requires a library card from a participating library for full access. Discover new leads, research companies, and find contact information.

Merfi AI: Text to Speech, TTS

Powered by murf.ai API

Free

Transform written text into natural-sounding speech with a variety of languages and voices. This tool is perfect for students, professionals, or anyone who wants to experience written content audibly. Enjoy high-quality audio and multi-language support.

Gammon API Gravity Calculator

by Gammon Technical Products

$9.99

Calculate corrected API gravity for jet, gasoline, and diesel fuels at 60°F. This digital tool also determines the total weight of the fuel, replicating the functionality of physical slide calculators.

JavaScript Manual

JS syntax reference, tutorials

Free

An offline, ad-free guide to JavaScript, covering its core guide, built-in objects, and Web API. Access comprehensive documentation without an internet connection.

Api token Pricing Calculator

AI API prompt token cost tool

Free

Estimate AI API costs by inputting prompt and response tokens. This tool helps optimize budgets and control expenses for AI projects, offering real-time pricing based on token usage.

Petey - AI Chat for Watch

AI answers on your wrist

Free

Interact with a powerful AI model directly from your Apple Watch or iPhone. Get quick answers, generate messages, create music playlists, and more. Access knowledge and communicate with an intelligent computer in real-time.

API-Client Testing

REST API

Free

Send and analyze HTTP/HTTPS requests directly from your mobile device. Save requests to collections for easy reuse and view detailed response information, including headers and round trip time. Customize connection timeout settings for efficient testing.

Curly — REST API Client

REST API Client for Developers

Free

A native REST API client for iOS and iPad, designed for developers to test and debug APIs efficiently. It supports various request methods, response inspection with syntax highlighting, and collection organization.

Rest – HTTP API Client

Perform HTTP Requests

Free

Easily perform HTTP requests directly from your mobile device. Supports various body types, syntax highlighting, and detailed response inspection. Import collections and manage project variables for efficient API testing.