Once all the parts of the project are developed and combined, a beta version of the product is delivered. It goes to the trial period to fix all the bugs and add missing features before the final launch. The stage of beta testing shows how the app will function and how the real users will perceive it, so it is a crucial phase to provide the best result.
There are two types of beta testing: private, where only invited users can test the app, and the public, which allows everybody to try the beta version of the software. Regardless of the testing type, it will uncover the bugs and help define which features are missing. After thorough checking, developers fix the problems and - drum roll - the project is ready for launch.