hello @thiago.silva, great to see you’re moving along well on your apps!!
here are some thoughts on your questions:
Variables are specific to Apps, and cannot be shared among more than 1 App. however, Tables work well to send information between Apps. have you tried storing the information in a Table Field for it to be used in another App?? for ref.: An Overview of Tables
could you provide more information (screenshot if available) of what you’d like to do?? this article: How to Set Up a Station walks you through how to setup Stations.
finally, these are great questions for Office Hours. we meet at 11AM EST every Thursday, let me know if this is something you’re intersted in and I’ll add you to the invite.