모바일 앱의 로딩속도 만족도에 로딩시간, 콘텐츠, 로딩화면, 애니메이션 효과가 미치는 영향

Background Users’ expectations of high speed have been steadily growing as thehardware and network performance of smartphones have advanced. The length oftime before an app starts to run (load time) is one of the critical factors that canindicate the speed performance of smartphones. However, the speed that usersactually feel may depend not only on the load time but also on other design factorsrelated to user interfaces or content.
Methods By investigating user satisfaction with app load times on a recentsmartphone, this study identified several possibly influential design factors.
In order to more closely examine the effects of these core design factors onspeed satisfaction, Android apps that can control load times and design factorswere developed and three experiments were conducted. The experiments wereperformed to evaluate user satisfaction with load speeds according to the typeof contents (simple text, multimedia), type of loading screen (empty, intro, andloading circle), and animation effects (no animation, enlarging, sequential, andscattered) under different load times.
Results First, the participants’ satisfaction level reached a level of 70%when the load time was about 1.6s, and 50% when it was about 2.7s. Second,the content type seldom had an influence on speed satisfaction. Third, whenthe load time was shorter than 1.75s, an empty loading screen was better thanany other type of screen. Finally, sequential loading animation always showedhigh satisfaction regardless of the load time. It was found that sequential andcontinuous changes of the screen might make participants more willing to endurea longer waiting time.
Conclusion This study presented several guidelines for proper load times,screen types, and animation effects to enhance user satisfaction with the apploading speed in smartphones.