Mobile Apps Designer Question:

When people are about to use something, they have already expectations (we call them mental models). For example, most users will buy a certain smartphone because they like the design principles behind its operating system, the appearance, or how the device works. So, the most important thing to consider when designing for iOS, or other mobile platform, is to consider vendor guidelines. While developers need to stick to vendor guidelines, the basic logic behind each application should be identical, regardless of vendor.

Designers should not try to reinvent the wheel by implementing some unexpected elements within the application. In order to provide an extraordinary experience, designers should experiment with improved user flow and interaction design. In the application industry, this is a standard; Apple does it, Google does it, and Microsoft is no exception.