Still, those who want an ad-free learning experience can opt to purchase a Duolingo Plus subscription for $6.99 per month, which also allows for offline downloads and supports free education for ...

Language-learning app Duolingo makes around $500 million annually, despite offering all of its lessons for free. WSJ explores how the company is using AI and A/B testing to keep users hooked.

"Duolingo at this point is really all in on AI ... "If you're talking to an AI, they're not judging you … so you can be free to just try things." I used the feature a few times and I still ...

People in Japan spent the longest time on Duolingo's free language-learning app among users from around the world, the company announced on Dec. 7. Duolingo Inc., based in Pittsburgh ...