Language Learning Platform

Duolingo :

 Duolingo is a free language-learning platform that includes a language-learning app along with a crowd sourced text translation platform, and a language proficiency assessment center. Duolingo is ad-free and users are not charged for its services. The language-learning app offers over 40 different language courses across 23 languages, and is available on iOS, Android and Windows Phone 8.1 platforms with over 100 million registered users across the world.
The project was started in Pittsburgh by Carnegie Mellon University professor Luis von Ahn (creator of reCAPTCHA) and his graduate student Severin Hacker, and then developed along with Antonio Navas, Vicki Cheung, Marcel Uekermann, Brendan Meeder, Hector Villafuerte, and Jose Fuentes The project was originally sponsored by Luis von Ahn's MacArthur fellowship and a National Science Foundation grant. Additional funding was later received in the form of investments from Union Square Ventures and actor Ashton Kutcher's firm A-Grade Investments.

Duolingo started its private beta on 30 November 2011 and accumulated a waiting list of more than 300,000 users. On 19 June 2012, Duolingo launched for the general public. Due to popular interest, Duolingo has received many investments including $20 million Series C round of investment led by Kleiner Caufield & Byers. Duolingo has 42 staff members, of whom many were Google employees, and operates from an office in the Pittsburgh neighborhood of Shadyside near Carnegie Mellon's campus
On 13 November 2012 Duolingo released their iOS app through the iTunes App Store. The application is a free download and is compatible with most iPhone, iPod and iPad devices. On 29 May 2013, Duolingo released their Android app, which was downloaded over a million times in the first three weeks and quickly became the #1 education app in the Google Play store. Duolingo then released both a Google Glass App (glassware) and support for Android Wear.

                                           

                                             ANDROID

 IOS

© 2015 ,Copyright by Bilal Asghar