My need was for a quick clipboard/note/shelf app that would allow me to share small bits of information between my Apple devices (iPhone, iPad, MBP). What I got with SnipNotes is a somewhat powerful data-collecting app that makes it incredibly easy to record, store, reference, and use information on a single device and across multiple devices.
There are a bunch of apps out there work for iPhone and iPad. SnipNotes, however, works on Mac and, most importantly for me, it lives in the menu bar for super-quick access. I cannot endorse SnipNotesNotebookClipboard enough.
If I had to ask for more, I would suggest adding an iMessage app to more easily share information while messaging, add more icon options (or use emoji) for notes, nesting of categories.
Even without any of those suggestions, though, SnipNotesNotebookClipboard is just so excellent and should be useful to anyone.