How Duolingo Built a $700 Million Company Without Charging Users

“We believe true equality is when spending more can’t buy you a better education.” – Duolingo founders When the language learning software company Rosetta Stone went public in 2009, they raised $112.5 million on their first day of trading. They’d built a successful public company by going after a huge but fragmented market—worldwide language learners—and … Continue reading How Duolingo Built a $700 Million Company Without Charging Users