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While the market for Smartphone applications (apps) is competitive, app loyalty is a constant concern for developers and vendors. Only one in five smartphone apps are downloaded more than 1,000 times; and for every four downloaded applications, at least one has never been used (Hoehle et al. 2015). The success of globally popular apps, such as WhatsApp, will be undermined if user loyalty cannot be sustained. With competitors (e.g. Line, WeChat, and Snap Chat) attempting to imitate the persuasive design of WhatsApp, investigating the factors that influence user loyalty to software applications across cultures is a paramount issue for designers. Such factors can reduce the cost, effort, and Abstract

Persuasive System Design Principles that Impact the Usability of Smartphone Applications