Users can keep images, titles, and descriptions in the app, and create and keep multiple pictorial books / albums.-PDF files can be output for each picture book and album.-PDF files can be output in A4, B5, A5, and B6 sizes.-Provides light operability because images are captured inside the app.-Supports Jpeg and Png.-Data will not be linked with the outside of the smartphone. (Excluding advertisements)-You can set a password for the app.-You can switch to multiple themes with different atmospheres.