Company SHIBUYA Masanori created these great apps:
ExpenseBook, Sketcher, ExpenseBook -budget viewer, ContactsBook -AddressBook, ReminderBook, けいさんのれんしゅう, CalendarBook Pro, Multiplication Training, CalculationBook, CalculationBook Pro, ContactsBook for iPad, ListBook, CalendarBook, Stroke (single stroke puzzle), ListBook Pro : simple shopping / to-do list, and others..
