Objectives: To promote the development of professional orthodontic apps and to grow app engagement, many contributing factors should first be scrutinized. The main purpose of this research was to assess whether gap analysis facilitates strategic app design.
Materials And Methods: Gap analysis was first conducted to reveal users' preferences.
Objective: This study aimed to develop the Moyers' prediction equation to be used with tooth widths predicting app on smartphone.
Materials And Methods: Four equations were developed separately for sex and dental arches. Internal validation with Moyers' table was finished.