First, I would take a look at this AppStore module to see if they implement all API's.
If that doesn't answer your question, I would implement the complete workflow:
As you can see in the example response, an app has a Name field which is different from the AppId field.
[{
"Name": "Calculation App",
"Url": "https://calc.mendixcloud.com",
"ProjectId": "fae5de74-69c2-4488-a4de-abf89daac63e",
"AppId": "calc"
},{
"Name": "Tic Tac Toc",
"Url": "https://tictactoc.mendixcloud.com",
"ProjectId": "f5129445-b638-42f4-8108-5f370c85dc57",
"AppId": "tictactoc"
}]