Is it impossible to make an app like this?

I think you are right

Solution solved

By the way
Can you tell me all of the action of the activity starter

For this activity it is provided in the link above.

More general use:

https://ai2.appinventor.mit.edu/reference/components/connectivity.html#ActivityStarter

https://ai2.appinventor.mit.edu/reference/other/activitystarter.html

It just tells you few

But this is not what im talking about.

Its like this

1.android.intent.action.INSTALL_PACKAGE
2.etc

Please make your mind up...

We find out, mostly by trial and error, which intents can be called through the activityStarter, and which ones will require more work through an extension.

You probably need to do some reading and research:

https://developer.android.com/reference/android/content/Intent