PlayWithClock is an educational app designed for iPhone users to help them understand and learn how to read analog clocks. The app features an interactive clock interface where users can manipulate the clock hands, observe the time change, and listen to the announced time in both Japanese and English. This dual-language option enhances learning for users who may benefit from exposure to both languages. The app includes a quiz feature that challenges users to answer questions about time, reinforcing their understanding in a fun and engaging way.

In addition to the core clock manipulation features, PlayWithClock allows users to record their own voice for time announcements, providing a personalized experience. Users can adjust the clock's appearance by changing its parts and colors, making the learning process visually appealing. With functionalities like auto-repeat for time announcements and the ability to calculate future or past times, this app is a comprehensive tool for improving mathematical skills related to time comprehension.