Build multiple instances of the same app source

I want to create multiple Apps (just with diffrent jsons sourceFiles)
Whats the best Way to mange this?

Any IDeas? Changing “Id” in app.js doesnt create a new App on my mobile

var app = new Framework7({
  name: 'JägerApp', // App name
  theme: 'auto', // Automatic theme detection
  el: '#app', // App root element
  component: App, // App main component
  id: 'io.framework7.jaegerApp', // App bundle ID
...
}

It’s cordova app. You need to change the config.xml. and create one keystore for app.

Do you mean after render the App?
I need before

Before. No can’t have 2 apps with same id or same keystore.