Well, in this postmodern universe, nothing is so simple anymore.
After scratching my head, I reached the opinion that its a pointless endeavour. What We Believe We believe kids enjoy writing about things they are curious about or interested in!
Families can talk about reasons to write.
In fact, it's better than Scrivener's DropBox syncing and much more like Ulysses' iCloud-based approach. With it you can create folders and move documents between them with the ease of drag-and-drop.
For gaming and Photoshop, I use Microsoft Windows. I was appropriately mind blown by this.