We ran user studies to learn how new users experience the app, what features were most appealing, and what was confusing
Redesigning Evernote for iOS
Kara Hodecker

Could you please talk more on how you did the user studies? Were they in-person or remote?

Contextual Interviews or Ethnography?

If interviews then how did you frame the questions and then interpret the findings.

Also do you guys have a conceptual model of your application, basically a map of how user connects his goals to activities http://boxesandarrows.com/conceptual-models-in-a-nutshell/ (Any team member interested in Interaction Design (not UI, pure IxD) would have heard about it.