Instead of confining you to typing out lines of text, the 'Vesper App' allows you to take notes any way you like. When making a note, the app lets you insert photos, drag things around to rearrange them and tag whatever you'd like. Vesper's flexible nature comes from the fact that it does not force a system on you. As a result, you can take notes in the most natural way possible.
By tagging your notes, Vesper gives you an organic way to organize and use them. Notes are automatically organized by tag on the sidebar for you to easily access. Just tag something and it appears organized in a subcategory. When creating tags, recently used ones pop up so that you can easily tag your items.