GUI optimisation for an existing Charging app

In order to avoid having to go through the entire UX and usability engineering process to derive usage objects from the known and anticipated usage scenarios, a lean UX approach is chosen. Tangible and easily explained usage objects are derived from the verbal descriptions of the usage context and from other, already existing documentation, and supplemented from a technical point of view. All known nouns are ultimately combined into several variants of an information architecture of usage objects. Identified actions serve as a template for the use and naming of app functions. Based on a cross-platform layout and interaction concept for smartphone apps that was also created, several product variants are outlined in a LoFi (Low Fidelity Prototype/Wireframe in PowerPoint). Graphic designs complement the concept.