How to integrate two applications in one?

[pegetive]

I'm implementing two short games for Fitbit Ionic and each of them, similar to each Fitbit app, includes index.js, index.gui and widget.gui. I need to put the games into one application as the user is supposed to take one of the games when prompted (it is for research purpose). However, I don't know how to create a higher level app that can run one of the games; for example the higher level app runs game 1 if the user taps on "Start game 1". Does anyone know how I can do it? thanks 

[qichuan]

This library might help you

https://github.com/gaperton/ionic-views

[Gondwana]

...or keep them as separate apps and use launchApp().

[qichuan]

This library might help you

https://github.com/gaperton/ionic-views

[pegetive]

Thanks.Where can I find the guide on how to use launchApp() function?

[JonFitbit]

https://dev.fitbit.com/blog/2018-12-17-its-time-to-exercise-with-fitbit-os-3/#app-launch-api