The '에스원 아이랑약속' application is designed for parents utilizing the Safe Junior/Youth plan, offering a range of features aimed at promoting safe smartphone habits for children. Key functionalities include monitoring smartphone usage, blocking harmful content, and managing app purchases without parental consent. Parents can set specific usage times tailored to their child's routine, ensuring a balanced approach to smartphone use.

The app provides real-time monitoring, allowing parents to track daily smartphone usage, app activity, and internet browsing history. Additionally, the companion app for children enables them to see their usage patterns and understand their screen time limits. Note that this service requires specific devices and plans to operate effectively, and certain permissions must be granted for optimal functionality.