A phenomenal app refers to an application that attracts widespread social attention and usage in a short period of time. This type of application may quickly gain a large number of users and high exposure after its launch, and often become a hot topic on the Internet. In a highly competitive market, applications that can become phenomenal apps generally have the following characteristics: unique and innovative functions or services, design and interface that meet user needs, and appropriate investment and promotion. Today, applications such as "TikTok", "WeChat", and "Maoyan Movie" have become obvious phenomenal apps, and the success legends of these applications have also provided reference and inspiration for other applications.