Best Api Debugger Apps

249+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated September 2026

Every iPhone needs a few good api debugger apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Api Debugger Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1API DebuggerAPI DebuggerFree3.0★ (1)NoNoJul 2026
2HTTPBot: API & HTTP ClientHTTPBot: API & HTTP ClientFree4.5★ (1.3K)NoYesSep 2026
3SSE Inspector - LLM API ClientSSE Inspector - LLM API ClientFree5.0★ (1)NoNoJul 2026
4ReqableReqableFree4.7★ (6)NoYesAug 2026
5QRU? - QR Code DebuggerQRU? - QR Code DebuggerFree was $0.99NoNoSep 2026
6API ZenAPI ZenFree was $7.99NoYesMay 2026
7API & HTTP ClientAPI & HTTP ClientFreeNoNoSep 2026
8API Client - REST HTTP TesterAPI Client - REST HTTP TesterFreeNoNoAug 2026

Top Picks for Api Debugger

API Debugger#1

API Debugger by Guilin Cui

Editor's Choice
📊 Productivity
3.0(1 ratings)
Free
API Debugger screenshot 1
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This tool helps developers inspect and understand API response data. It provides a clear interface for debugging and analyzing the information received from APIs, aiding in the development process.

HTTPBot: API & HTTP Client#2

HTTPBot: API & HTTP Client by Arvindh Sukumar

API, MCP & WebSocket Debugger
Strong Contender
🛠️ Developer Tools
4.5😐(1.3K ratings)
FreeIn-App Purchases
#56in Developer Tools
HTTPBot: API & HTTP Client screenshot 1
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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.

What We Love

  • 🚀 Intuitive interface
  • 👍 Postman integration
  • 🚀 Powerful HTTP client
  • 👍 Great tool for API testing
  • 👍 Useful for developers on the go

Room to Improve

  • 🐛 Crashes and bugs
  • 🔒 Lacks security features (e.g., client certificates)
  • 💰 Expensive for the limited free version
  • 🤔 Unintuitive UI and documentation
  • 🐛 Postman integration issues
SSE Inspector - LLM API Client#3

SSE Inspector - LLM API Client by 猛 李

Debug AI streams fast
Worth Considering
🛠️ Developer Tools
5.0(1 ratings)
Free
SSE Inspector - LLM API Client screenshot 1
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Debug AI API streams with this tool that preserves SSE responses, showing every packet, semantic delta, and timing. It supports multiple AI models and imports cURL commands for easy session management, editing, and sharing.

More Api Debugger apps to explore

FAQ about Api Debugger

What are the best api debugger apps for iPhone?
API Debugger tops our api debugger apps ranking as of September 2026, with a 3.0-star average from 1 App Store ratings, and it's free to download.
Yes — 20 of the top api debugger apps we rank are free to download, including API Debugger and HTTPBot: API & HTTP Client.
API Debugger has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ api debugger apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
API Debugger is used to debug and analyze API response data. It provides developers with a clear interface to understand the information received from APIs, which is crucial for the development process.
API Debugger is supported on iPhone, iPad, and iPod devices. It is designed for Apple's mobile operating system.