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API Tester Pro

Test HTTP API Endpoints

API Tester Pro helps you test your REST API endpoints with an intuitive request composer. Enable iCloud syncing or keep workspaces on device with seamless switching.

API Tester Pro brings the convenience of HTTP API endpoint testing on the go. With its intuitive request composer and detailed response information, it helps developers test endpoints with ease.

Request Composer Send Request Detailed Response Info Response Modes Environment Variables History Dark Mode Dark Mode Response

Main features

  • Simple and intuitive request composer and viewer

  • Supports headers, request parameters, request body with JSON, XML, raw input, forms with file, image attachments, multipart and binary data

  • Organize endpoints into workspaces and projects

  • Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only.

  • Seamless switching between local and iCloud workspaces

  • Option to add custom HTTP methods per project

  • Detailed response information which includes headers, cookies, metrics and connection information

  • View raw response with syntax highlighting

  • Preview HTML response output as web page

  • View all response history

  • SSL validation per request

  • Environment group with variables per workspace with option to select different environment per request

  • Supports dark mode

  • Import/Export workspace data

The app is written in Swift and UIKit. Supports iOS 13 and above. The app is written with performance considerations and efficient resource consumption in mind. As as such, is highly optimized and easy on battery usage. The app size is less than 4 MB as per the app store.

Version History

2.4

  • Fixed an issue where newer versions of iOS 17 and above on devices with bezels are not detecting taps on the "add header", "add params" buttons and only on the icon. Made the tap on the entire row instead.

  • Fixed an issue where the delete row tap on headers and params shows delete view on the right side in reverse order of the list. Now the delete row view displays on the correct row.

2.3

  • Fixed an issue where local environment is not getting saved and listed

  • Code editor UI update

2.2

  • Code editor with syntax highlighting for editing JSON, XML POST request body fields

  • Fixed a bug where requests in local workspaces are not sending all the request attributes

2.1

  • Fixed an issue where workspace, project listing is not showing full name and description when the texts are very large

  • Display workspace name in home screen toolbar to truncate to one line when the text is large

2.0

  • Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only.

  • Seamless switching between local and iCloud workspaces

  • Response details screen UI enhancements

  • Added option to copy response details table values on long press

Download API Tester Pro