Local storage companion app (smartphone folder)

[STEP___]

Since it is now possible to transfer files from the device (Ionic) to the companion app (smartphone), I was wondering where this data is stored. Is it possible to store the data in an accessible folder on the smartphone without setting up a server?  

[Gondwana]

It isn't stored anywhere accessible on the phone. However, you can cobble together an app on the phone that works as a server and intercepts network traffic from your companion app.