Each individual who joins has their own profile. To motivate users to participate, the site offers feedback, badges for completing exercises, as well as a function that keeps track of a user’s total score and total day streak, and displays it to others. There are also CSS and HTML glossaries available within each tutorial. The site allows anyone to create and publish a new course using a Course Creator tool.
As part of the Computer Science Education Week held in December 2013, Codecademy launched their first iOS app called “Hour of Code”. The app focuses on the basics of programming, including the same content from the website, and it’s aimed for people who want to learn programming in a fun way and on the go.
This information is from wiki.