A new class-action lawsuit against Duolingo shows how aggressive ads and rapid artificial intelligence development are changing the popular language-learning app. This legal battle comes just as the company prepares to shut down its dedicated platform for teachers. For parents and educators, these shifts raise questions about student focus and the value of premium educational apps.
What Happened
According to the class-action lawsuit filed by Kahn Swick & Foti, LLC, Duolingo deliberately added "user friction" to push free users toward expensive subscription tiers. The lawsuit claims that executives increased ads and aggressively upsold paid tiers. It also alleges they allowed overall product quality to decline, despite knowing these changes would frustrate learners. According to the filing, Duolingo's internal A/B testing revealed these changes drove daily active users away. For educators, the most concerning claim is that Duolingo's rapid adoption of generative AI content degraded its lessons and put long-term student performance at risk.
The Bigger Picture
For years, Duolingo was a classroom staple. However, as we previously reported, the app's aggressive monetization tactics have cognitive consequences for young learners. Cognitive research shows that sudden digital advertisements interrupt a child's working memory. When an ad pops up mid-lesson, students experience a "context switch." This distraction often causes frustration, making children guess answers or abandon their lessons.
The company is also changing how it interacts with schools. According to Talkio AI's report on Duolingo alternatives, Duolingo plans to shut down its "Duolingo for Schools" dashboard on July 31, 2027. This dashboard was essential for teachers. As noted in an analysis of ESL teaching tools, the Schools platform allowed educators to track student progress and assign specific tasks. It also provided students with an ad-free learning environment. Without this tool, students using the free version of Duolingo in class will see the same disruptive ads highlighted in the lawsuit.
Meanwhile, Duolingo has shifted toward automated content. By using generative AI, Duolingo managed to more than double its language course catalog in under a year, rolling out 148 new courses. While this quick expansion made more courses available, it raised concerns about real educational quality. An independent classroom audit published by Oxford English Global found that the premium AI-driven tier, Duolingo Max, yielded only 3.2 minutes of corrected, active language practice per hour of study. Although this is slightly more than the free tier's 1.1 minutes, it falls far behind competitors like Babbel and Speak. Researchers labeled the high-priced option as "mostly a pricing tier."
What This Means for Families
These developments mean Duolingo may no longer be the straightforward tool it once was. While the free version is still easy to access, the heavy push toward paid subscriptions has hurt the user experience.
The expensive Duolingo Max tier, which costs around $29.99 a month in the United States, offers little extra value. A comprehensive breakdown of Duolingo's pricing points out that the core educational curriculum is identical across both free and paid tiers. Paying for the premium subscription does not unlock new lessons. It simply removes the disruptive ads that Duolingo allegedly increased to force subscription sign-ups.
What You Can Do
Parents can start by limiting free-tier screen time. If your child uses the free version of the app, monitor their usage to make sure they do not get stuck in a loop of ads and upsell prompts that disrupt their focus.
Educators should prepare for the classroom dashboard shutdown by researching alternative platforms before July 2027.
Finally, if your child needs active, graded speech practice, consider specialized tools that offer higher rates of conversational feedback instead of relying on high-priced AI subscriptions.