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Compatibility: iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch and iPad. Requires iOS 6.0 or later.
Via: Apple App Store
Edmodo is an app developed in response to the rising use of Internet resources and communication tools to build bridges between students and teachers. Touted as a secure social network for education, the app can be used for classroom discussions, posting assignments, grade tracking, file sharing and uploading, and includes features such as a news feed and resource library.
Edmodo has over 20 million users, according to the developer.