안녕 마음아 is a touch book app that brings to life the beloved children's creative story series. It is a collection of 58 books that nurture the power of the heart, teaching children to value themselves and show empathy towards others.

With 안녕 마음아, children can explore 30 out of the 58 books in a sequential manner. Each book is a delightful adventure filled with beautiful illustrations and engaging storytelling. The app allows users to simply click on the book cover to authenticate and download the books for use. This service is exclusively available to verified members who have purchased the genuine copies.

Even non-members can enjoy a sample of the books before making a purchase. For any inquiries or assistance with purchasing, you can reach out to 그레이트북스 customer support at.