Today students are working very hard to finalized their APP. They are prototyping, testing, and create new layouts when the App need to change. Also, students are managing Sketch App, Proto.io, and Marvel to provide to the Apps realism. Every class students are showing progress on their Apps, logos, colors, layouts, and dynamism.
Also, here are some websites that can provide more information in how the visual elements of the App can help the users to understand the functions.
Facebook Design Principles
IBM Research
Google Design
Microsoft
UX Magazine
