Great app. Folders please?

This is a great app for studying. However, it would be great if there could be a way to organize notecard groups in folders. You can color code and filter the cards so that you can see only certain groups of notecards at a time, but I would like to be able to organize them in folders so that it looks better aesthetically. Also, I am having difficulty opening notecards on other devices. Other than these issues, this is a very reliable and helpful way to study!

Munchiemoo about FlashFacts