If you had your property on Google Analytics after October 14 2020 you probably never seen "Universal Analytics" but now you have Google Analytics 4.
So what's the difference between them? First of all, "Universal Analytics" properties only supporting websites but you can use Google Analytics 4 both for your website and app. Beside this big advantage Google Analytics 4 has different types of reports.
But if you say "I'm already using Universal Analytics and I don't wanna jump in before take a look and learn about Google Analytics 4" there is no need to worry! Google offering you a solution. You can keep your Universal Analytics, also have a Google Analytics 4 properties at the same time, they will collect your datas separately. And also if you don't like Google Analytics 4 you can turn your property Universal Analytics again.For further information you can click here.