Duolingo was started in 2010, offers more than 30 languages, hundreds of millions of users, first Logo in 2010, in 2011 a more friendly logo was in-tro-duced, first Duolingo owl in-tro-duced in 2011, lasted less than a year, in 2012, 3-D and more friendly, feathers pointing up represent progress, in 2013, drawn in a flat manner, friendly, jumping and dancing, 2019, more fancy and el-eg-ant, still exists today,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?