Feature request

[NavaneethakrishnanVG]

Hi Dev! I'm doing well, and hope you are doing well!

First of all, I can't resist myself from describing this stunning and feature-packed Quenti UI UX.
Though it lacks at organizing study sets and folders.

• The separation of study sets and folders
  To take the user experience to another level, the study set and folder should be presented in two different tabs. It helps identify and access something quickly.

• Folders and Subfolders (aka. Nested folders)
  It is a much-needed feature for better organization. (Breadcrumbs for deeper nests.)

• Recent tab
  The Recent tab is as important as other tabs. So it could be placed above or below the primary tabs and never be neglected.

I'm not a designer, but I tried my best to illustrate what I'm thinking.

That's it. I hope it helps with UX enhancement.
Cya! <3