API Tester vs. Postman Comparison


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About API Tester is a completely free mobile app available on iOS, Android, macOS, and watchOS. It is a functional API testing tool that allows users to complete compound tasks on any device. - Test any API on the go: REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS. - GET, POST, PUT, PATCH, DELETE, etc. HTTP request methods are supported. - Perform the API calls with any kind of request data encoding and transfer type. - Import collections from Swagger, Postman, and YAML, or import requests using cURL, as well as export created requests via link or cURL. - Use a powerful GraphQL editor with full-scale experience. - WebSocket testing tool is available: handles connection and message exchange via WS or WSS. The API Tester mobile app allows you to get the job away from your workstation. Save time, work from anywhere!	About The collaboration platform for API development. Simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman. Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production. Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a backend server. Generate and publish beautiful, machine-readable documentation to make your API easier to consume. Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals. Provide a shared context for building and consuming APIs, and collaborate in real-time.
Platforms Supported Windows Not Supported Mac Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Supported iPad Supported Android Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Programmers and developers who design, debug, and test APIs	Audience Organizations of all sizes
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing Completely free All features are available for free Free Version Supported Free Trial Not Supported	Pricing $12 per user per month Free Version Supported Free Trial Supported
Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 4.5 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 4.8 / 5 ease 4.9 / 5 features 4.8 / 5 design 4.9 / 5 support 5.0 / 5 Read all reviews
Pros & Cons from Real Users Pros API Tester is free. The best GraphQL editor I ever saw. It gives the option to run literally any type of API. Easy import options. Pleasant user experience overall. Learning how to use the app wouldn't take too long. Application is pretty simple, straightforward and works well. Validating Restful and SOAP APIs, WebSocket applications, as well as GraphQL applications has been a good experience using API Tester. All the underlying challenges that come to mind for testing backend applications are well served. What is more important - it's completely free and all features are available without any fees. This mobile app increased my productivity, and I can test APIs from anywhere on the planet using only a mobile device. Cons Not optimal for fully automated testing, but it would be unfair to demand this from a mobile solution. The only cons is the lack of a desktop version. I think it could replace my other desktop alternatives.	Pros & Cons from Real Users Pros I have used Postman for more than 5 years now and never have i faced any lags or stutters in my usage, even with low end computers. Earlier it was available as only desktop application but now it is also available as web application making it more accessible and easy to use, i can login from anywhere and test my endpoints. It keeps my collection and environments saved so i wont have to worry about that also. 1. The application's user interface is intuitive and easy to learn for a new user. 2. Collection and environment can be easily imported. 3. It gives detailed information about each API call with a brief response body which can also be converted into different formats like raw, text or JSON. 4. It supports dark mode which is very useful for all of us developers who likes to work late nights. This is our go-to solution for API testing. It is easy to set up endpoints and save them to a shared workspace. Postman is an excellent software for running APIs. Usage for me, it excelled at was running quick requests and then being able to transform the call into multiple formats. For example, by running a cURL request, you can get the NodeJS, Python, Axios code quite easily. You can also store requests in folders, something that always came in handy was Postman storing a history of previous made requests, so if you didn't save or lost a request, you could always go back to it. The user interface and experience of the application is simplified and curated in such a way that all the necessary features gets highlighted on the screen. It has all the required tools to test the APIs extensively and further share or collaborate with other team members on a project. It has all the requests options for testing like, GET, POST, PUT, DELETE etc. The load time of the requests are pretty quick. All in all, a great tool to test APIs on a live server as well as in a mocking environment. Cons If you are using an free account it does not allow collaboration with many people. I can only think of this cons as of now, also, if you have a company or do serious freelance work you would have business account anyways. I have faced a weird problem with Postman, sometimes when I do an API call I modify the request body and does not save it, and if I close the app and reopen it the request body and API endpoint gets replaced with some random endpoint from the collection that I am using. Would like to see a better mock server implementation. There are no real cons to Postman, it does its job exceptionally well with every feature. For testing SOAP APIs, there are still a lot of improvements needed to be done in the application.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Supported Live Online Not Supported In Person Supported
Company Information API Tester Founded: 2020 United Kingdom apitester.org	Company Information Postman Founded: 2014 United States www.postman.com
Alternatives JIterator Windex Inc	Alternatives API Tester
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Categories API Testing Supported	Categories Agentic AI Supported AI Agent Builders Supported API Clients Supported API Design Supported API Documentation Supported API Management Supported API Monitoring Supported API Testing Supported Microservices Supported Webhook Supported
API Testing Features Functional Testing Supported Fuzz Testing Supported Load Testing Supported Penetration Testing Supported Runtime and Error Detection Supported Security Testing Supported UI Testing Supported Validation Testing Supported	Show More Features API Management Features Access Control Not Supported Analytics Not Supported API Design Supported API Lifecycle Management Supported Dashboard Supported Developer Portal Not Supported Testing Management Supported Threat Protection Not Supported Traffic Control Not Supported Version Control Supported
Integrations AIMS360 Apparel Software Not Supported APIMatic Not Supported CloudBeat Not Supported CloudNuro Not Supported Curiosity Modeller Not Supported DocuWriter.ai Not Supported Genatron Not Supported Hoppscotch Not Supported Microsoft Power Automate Not Supported Prodmode Not Supported Quickwork Not Supported Revmonk Not Supported SAWO Not Supported Speakatoo Not Supported SwytchCode Not Supported Theneo Not Supported Thunder Client Not Supported WhoisFreaks Not Supported Zenduty Not Supported ipbase.com Not Supported Show More Integrations	Integrations AIMS360 Apparel Software Supported APIMatic Supported CloudBeat Supported CloudNuro Supported Curiosity Modeller Supported DocuWriter.ai Supported Genatron Supported Hoppscotch Supported Microsoft Power Automate Supported Prodmode Supported Quickwork Supported Revmonk Supported SAWO Supported Speakatoo Supported SwytchCode Supported Theneo Supported Thunder Client Supported WhoisFreaks Supported Zenduty Supported ipbase.com Supported Show More Integrations View All 118 Integrations
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