  Graphical User Interface (or simply UI) is a primary mean of interaction
between users and their device. In this paper, we discuss three major
complementary approaches on how to use Artificial Intelligence (AI) to support
app designers create better, more diverse, and creative UI of mobile apps.
First, designers can prompt a Large Language Model (LLM) like GPT to directly
generate and adjust one or multiple UIs. Second, a Vision-Language Model (VLM)
enables designers to effectively search a large screenshot dataset, e.g. from
apps published in app stores. The third approach is to train a Diffusion Model
(DM) specifically designed to generate app UIs as inspirational images. We
discuss how AI should be used, in general, to inspire and assist creative app
design rather than automating it.
