Memo@21KG is a parent-school communication mobile application integrated with Google platform, aiming to provide convenient communication channels and allow parents to manage student affairs effectively. There is also a back-end administration system for school administration office. Features of Memo@21KG: Record student attendance data and parents instantly check their children’s arrival and departure time* Parents receive latest news of school Review student’s schedule through Google Calendar Integrated with G-Suite for Education platform, school is allowed to use Google Documents, Spreadsheets, Slides, Forms and Photos to publish announcement and internal information Draft and publish school notices through Google Forms Parents are allowed to send notifications to school, including leave notice Support multi-account login for easy management of each child’s school affairs Instantly receive school’s push messages *It is only applicable to schools which are already subscribed to relevant services.