# ApiClient: REST API Tester — HTTP Client for GraphQL & cURL > Mobile client for testing, managing, and sending REST APIs and Firebase notifications. (iPhone/iPad app by Ajaykumar Valand.) - Source: https://appshunter.io/ios/app/apiclient-rest-api-tester/id1595150293 (this page in markdown: same URL + `.md`) - Developer: [Ajaykumar Valand](https://appshunter.io/developer/1595150295) - Category: Developer Tools, Productivity - Price: Free with in-app purchases - Rating: 1.00/5 from 1 App Store ratings · 13 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 17 MB - Languages: American English - Released: 2021-11-23 - Data updated: 2026-10-11 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/apiclient-rest-api-tester/id1595150293/reviews.md ## What is ApiClient? ApiClient is a mobile developer client to test, debug, and manage REST, GraphQL, and WebSocket APIs anytime, anywhere directly on your iOS device. No need to open your laptop just to test an API endpoint, inspect SSE event streams, test FCM push notifications, or generate code snippets. ApiClient gives you desktop-grade API testing power on mobile. KEY FEATURES 1. Multi-Protocol API Testing • REST Client: Support for GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS. • GraphQL Suite: Dedicated Query and Variables editor with syntax formatting and error handling. • Real-Time WebSockets: Connect to ws:// and wss:// endpoints with live frame logging, custom headers, and message composer. • Live SSE Streaming: Inspect Server-Sent Events in real-time for AI and LLM streaming APIs. 2. Postman & OpenAPI Compatibility • Postman Collections: Support for Postman Collection v1, v2.0, and v2.1 with multi-level nested folders. • OpenAPI / Swagger: Import OpenAPI 2.0 and 3.0 specifications in both JSON and YAML. • 1-Click cURL: Instant cURL import from clipboard and export to cURL. 3. 9-Language Code Generator Convert API requests into clean, ready-to-run code snippets: • Python (requests) • JavaScript (fetch) • Kotlin (OkHttp) • Swift (URLSession) • Dart / Flutter (http) • Go (net/http) • PHP (cURL) • Java (OkHttp) • cURL command 4. Push Notification Tester (FCM HTTP v1) • FCM HTTP v1 support with on-device OAuth2 token generation. • Import Service Account JSON securely or use Bearer tokens. • Custom notification payloads and topic messaging. 5. Session Cookie Manager & Variables • Automatic Cookie Jar captures response Set-Cookie headers. • Domain-grouped cookie inspector with add, edit, and clear capabilities. • Dynamic Variables: Use {{variable}} substitution across URLs, headers, and request bodies. 6. Developer Power Tools • AI Response Diagnostics: Instant offline root-cause troubleshooting for HTTP errors. • JSON Formatter: Beautify and minify JSON with syntax highlighting. • Crypto Suite: Base64 and AES 128/256 Encryption and Decryption utilities. • History & Collections: Auto-saves request history with search, export, and quick replay. 7. Modern UI & Dark Theme • Full Dark and Light theme parity with automatic system theme synchronization. • Clean, responsive interface optimized for all screen sizes. 8. 100% Private & Local-First Your API keys, tokens, requests, and cookies stay strictly on your device. Zero cloud sync, zero telemetry, and zero middleman servers. ## Key features - Create HTTP/HTTPS requests - Import/export Postman collections - Send Firebase notifications - Format JSON requests - Save and share API requests/responses - Manage API history ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove ads | $1.99 | one-time | ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/apiclient-rest-api-tester/id1595150293/reviews.md ### 5/5 — GraphQL support is great *2026-09-08* I’ve been using it mainly for GraphQL testing and its been very convenient. Nice to have a proper testing tool available on mobile. ### 5/5 — Great for quick testing *2026-09-06* Great for quick testing Really useful when I need to check an API quickly. I don’t have to open my laptop anymore just to test a simple request. ### 5/5 — Effortless *2026-09-06* Work well with all types of API and very handy tool of development ### 5/5 — My API Debugger When I’m Away From My Laptop *2026-09-06* As a Senior Software Engineer, I was traveling without my laptop when a client reported an API error. I needed to debug it immediately, and ApiClient helped me do everything directly from my phone. I was able to test the API, check the response, identify the issue, and quickly provide a solution to the client. It saved me a lot of time and avoided waiting until I got back to my laptop. For developers who need to troubleshoot APIs on the go, this app is incredibly useful. 🚀 ### 5/5 — Very useful API testing app *2026-08-31* A really handy API client for iPhone. I use it to test REST APIs when I’m away from my laptop, and the request collections, history, response viewer, and Postman import/export are especially useful. Simple, practical, and easy to use. Definitely recommended for developers. **Developer response:** Hello me767679, Thank you for providing good feedback & rating. If you face any query in future then please email us at abcoderzsoftware@gmail.com. we will surely help you to resolve for same. Sincerely, Abcoderz Team ### 5/5 — Powerful API Testing, Anywhere *2026-08-31* As a technical lead, I often need to quickly check or troubleshoot APIs while traveling without my laptop. This app makes that really easy — I can test APIs, check GraphQL/WebSockets, inspect SSE streams, import cURL requests, and even generate code directly from my iPhone. It’s extremely useful when I need to verify something on the API side and give quick instructions to the development team. A great tool to have on the go! **Developer response:** Thank you so much for this! As the person behind the app, it genuinely makes my day to hear that it’s useful in real situations like this. ### 5/5 — Best API collection app *2024-08-08* Best and easy to use for developers and API testers. ### 5/5 — We will *2023-08-04* I don’t ### 5/5 — John has to work for the *2023-06-27* The game was so fun I just ### 5/5 — Good morning I’m just getting home *2023-06-27* I just cannot is a ## Frequently asked questions about ApiClient ### What is ApiClient? ApiClient is a mobile application designed for developers to test and manage REST APIs directly from their smartphones or tablets. It allows for creating HTTP/HTTPS requests, handling collections, and sending Firebase notifications. ### Can I import Postman collections into ApiClient? Yes, ApiClient supports importing and exporting Postman collections, enabling you to seamlessly transfer your API testing configurations between platforms. ### Does ApiClient support sending Firebase notifications? Yes, ApiClient includes functionality to send Firebase Cloud Messaging (FCM) notifications to devices using API keys and FCM tokens, with support for custom notification payloads. ### How does ApiClient handle API history? The app automatically creates a history of all REST API and FCM requests made. You can search, delete single entries, or clear the entire history as needed. ### What types of requests can I create with ApiClient? You can create HTTP and HTTPS requests using raw data formats like JSON, text, JavaScript, HTML, and XML, as well as form-data. Headers can also be added with common hints. ### Does ApiClient have ads? Yes, ApiClient contains advertisements. This allows the app to remain free for users while offering its full range of features. ### What devices is ApiClient compatible with? ApiClient is designed for iOS devices, including iPhone, iPad, and iPod. It is rated for ages 4 and up. ### How often is ApiClient updated? The app was last updated on December 24, 2023, with version 1.6. This indicates regular maintenance and potential feature additions. ## Version history (last 5 releases) ### 1.8 — 2026-10-01 What's New • GraphQL & Real-Time WebSocket (ws/wss) client • OpenAPI / Swagger (JSON/YAML) & 1-Click cURL import • 9-Language Code Generator (Python, JS, Kotlin, Swift, Dart, Go, PHP, Java, cURL) • FCM HTTP v1 Push Tester with OAuth2 • Live SSE Streaming Inspector for AI APIs • Session Cookie Manager & {{variable}} engine • Offline AI Response Diagnostics • Seamless Dark/Light theme sync & UI improvements • Improved app performance and stability ### 1.7 — 2026-08-30 What's New • GraphQL & Real-Time WebSocket (ws/wss) client • OpenAPI / Swagger (JSON/YAML) & 1-Click cURL import • 9-Language Code Generator (Python, JS, Kotlin, Swift, Dart, Go, PHP, Java, cURL) • FCM HTTP v1 Push Tester with OAuth2 • Live SSE Streaming Inspector for AI APIs • Session Cookie Manager & {{variable}} engine • Offline AI Response Diagnostics • Seamless Dark/Light theme sync & UI improvements ### 1.6 — 2023-12-24 Improvements & Bug fixes ### 1.5 — 2023-03-21 - Bug fixes ### 1.4 — 2023-03-19 - Search in response screen - Improve user experience ## Apps similar to ApiClient | App | Rating | Price | Category | | --- | --- | --- | --- | | [SQL Server Mobile Client](https://appshunter.io/ios/app/sql-server-mobile-client/id1406176302) | 4.2 (56) | Free | Developer Tools | | [HTTPBot: API & HTTP Client](https://appshunter.io/ios/app/httpbot-api-and-http-client/id1232603544) | 4.5 (1,322) | Free | Developer Tools | | [REST API Client](https://appshunter.io/ios/app/rest-api-client/id1583154375) | 4.3 (6) | Free | Developer Tools | | [PostgreSQL Client](https://appshunter.io/ios/app/postgresql-client/id1233662353) | 4.6 (154) | Free | Developer Tools | | [PostX - Rest API Client](https://appshunter.io/ios/app/postx-rest-api-client/id6756872354) | 3.0 (10) | Free | Developer Tools | | [Visual File Editor](https://appshunter.io/ios/app/visual-file-editor/id1534296097) | 4.5 (25) | Free | Developer Tools | ## More apps by Ajaykumar Valand - [Rupee Control: Expense Tracker](https://appshunter.io/ios/app/rupee-control-expense-tracker/id6807792383) All apps by Ajaykumar Valand: https://appshunter.io/developer/1595150295 ## Related topics [apicbase](https://appshunter.io/ios/topics/apicbase) · [api crew care](https://appshunter.io/ios/topics/api-crew-care) · [symplr api](https://appshunter.io/ios/topics/symplr-api) · [59club mystery tester](https://appshunter.io/ios/topics/59club-mystery-tester) · [icurlhttp](https://appshunter.io/ios/topics/icurlhttp) · [myuhcglobal](https://appshunter.io/ios/topics/myuhcglobal) · [humen api](https://appshunter.io/ios/topics/humen-api) · [api events](https://appshunter.io/ios/topics/api-events) · [rest api](https://appshunter.io/ios/topics/rest-api) · [the human api](https://appshunter.io/ios/topics/the-human-api) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*