ONS (온스) is a productivity app designed to enhance study sessions for learners preparing for exams and certifications. It features a Pomodoro timer, allowing users to engage in focused study intervals of 25 or 50 minutes followed by breaks. This structured approach helps maintain concentration and improve productivity. Additionally, ONS offers real-time synchronization, enabling users to study alongside peers, fostering a collaborative learning environment.

The application also includes a study time ranking system that tracks daily, weekly, and overall performance, motivating users to engage consistently. A community section provides a platform for sharing success stories, study tips, and addressing concerns, while study groups allow friends to collaborate effectively. ONS is ideal for individuals seeking to enhance their study habits, manage their time efficiently, and connect with others in their learning journey.