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It's very straight forward. Takes the load of my browser. Very helpful with frequently used webapps. Now I don't have to keep the tab in my chrome open every time.
For each desktop app you're downloading the same bulk of identical base files.
You could also use Chrome's built-in desktop 'app' functionality (still eating memory 🙄) and make use of the chrome base that's already on your OS.
Now i can get rid of searching my instagram from the pool of chrome tabs