Access book content by purchasing individual titles. Manage purchases through account settings. Download content on multiple devices without additional charges. View purchase history and confirm downloads via in- prompts.
The app includes an optimal learning mode that prioritizes unlearned and difficult problems. It contains 103 problems with detailed explanations and a handwriting memo tool for recording intermediate results.
The app simplifies schedule management with a two-step process for adding events and times. It functions as a notification memo and to-do list, supporting users with easily forgotten appointments.
