How does the cube app work?

Sure, here's a description in the tone of a questioner, based on the paragraph "How does the cube app work?": "I'm curious to know more about how the cube app works. Can you explain in simple terms what the app does, and how it can benefit users? Is it a platform for trading cryptocurrencies, or does it offer other financial services as well? How does it ensure the security of user funds and transactions? And is there a specific process that users need to follow to get started with the app?