휴썸 is a free iPhone app developed by Antsome, falling under the Business & Productivity category. The app offers a comprehensive set of features for managing vacation time, attendance, internal calendars, voting, internal bulletin boards, notifications, team alerts, address book management, and an administrator web page.

Users can track their vacation history by year and month, view a graph comparing annual leave entitlement to leave taken, review detailed vacation requests, register leave by date, type, and reason, and approve or reject leave requests. The app also allows users to register attendance based on current location/time, view attendance records, check staff vacation schedules and internal events on a calendar, conduct and respond to polls with notifications to colleagues, post on internal bulletin boards with attachments, send emails and make calls directly to colleagues via the address book, receive notifications when supervisors post announcements, manage team alerts, and access an administrator web page for vacation records, company information, staff information, team management, vacation history management, vacation history export to Excel, announcement creation and management, and history tracking.