Postman makes API development and testing simple and efficient. I mainly use it to test REST APIs in my Spring Boot applications, and it lets me quickly send requests, manage headers, and validate responses without having to write extra code. The Collections feature is especially helpful for keeping APIs organized, and environment variables make it easy to switch between different setups, such as development and production. I also appreciate the built-in testing scripts and the authentication support (JWT, OAuth 2.0), which saves me a lot of time during development.

It helps me test my APIs without writing any code. It also helps me save my APIs, and it allows me to group related APIs together. On top of that, it lets me validate my responses by writing test scripts in JS.

Best thing i like about postman as a developer is it helps a lot to check the current status and response of api's to test and it gives proper response with code which helps a developer to find the route cause if any problem arises, Most of the time, rather than checking the whole code, i check API in postman first to check wheather data is coming or not, if its api fault chhecking code is of no use, postman saves this time. I usually use it more for SMS Service api test, to check the 3rd party api's wheather they are getting proper data or not. at the end Its an very blessing software for developers, dosent depend you are a web dev or an app, same thing works for all.