A sign advertising "7-day free trial" led to an immediate full-year charge of $103 for multiple users of language app Duolingo, sparking accusations of deceptive marketing on social media. One user stated she had already been using the free version for three to four months when she saw a prompt for the Super Duolingo family plan offering a "7-day free experience." Upon clicking subscribe, she was met not with a 7-day countdown but an immediate annual deduction of $103, with no free trial period at all. Her subsequent refund request through Apple was approved, but the core question lingers: if no trial is offered, why advertise one?

These consumer complaints arrive against a backdrop of Duolingo's share price having halved over the past year. The company now faces the dual challenge of addressing user dissatisfaction while reassuring investors worried about growth, forcing a delicate balancing act between paid conversion tactics and user experience. Analyst Wyatt Swanson from D.A. Davidson previously noted that the company's aggressive monetization push had "led to user dissatisfaction and significantly hurt word-of-mouth marketing."

In response, senior executives have repeatedly stated they are moving away from aggressive commercialization to improve the free-tier experience, aiming for a new target of 100 million daily active users by 2028. However, there appears to be a disconnect between these grand transformation goals and the actual feedback received from users on the ground.

The "Arrival of a Charge" Replaces the "Trial Countdown"

The issue extends beyond a single individual. Another user encountered what she described as a "disappearing reminder." She noted the free trial page promised a notification before the trial's end, yet she received no such alert before being converted to a paid subscriber. Her social media post warned others to be cautious of the 7-day trial, citing the lack of any expiry warning.

This frustration is not confined to Chinese-language platforms. Reviews from June to August on Trustpilot, a global review site, show one-star ratings from users in the UK, Australia, and the US, frequently citing "charges from free trial" and "no reminders." One British user wrote they were promised a two-day advance notice before the trial ended but received nothing, only a charge for a full year's subscription. Another sarcastically commented on the irony of a company that sends excessive emails failing to provide one crucial notification.

Even more damaging than the unexpected charge is the difficulty in reaching human support afterward. One Australian user described being "passed around" between Duolingo, Apple, and PayPal. Other users have complained that customer service only provides repetitive responses from an AI bot, making the support system seem effectively non-functional in the eyes of many consumers. Key questions remain unanswered, such as why a first-time subscriber would be immediately charged the annual fee upon confirmation and what mechanism sends the "expiry reminder." An inquiry to the company had not received a response at the time of writing.

Can Abandoning the "Instant Order" Mindset Win Back Loyal Paying Users?

The specific cause of the billing issue is still under investigation, but the conflict between the free experience and paid conversion has already entered the company's strategic review. In its shareholder letter for the fourth quarter of 2025, Duolingo acknowledged that previous methods of increasing bookings, such as adding ads and more subscription upgrade prompts, had the short-term effect of boosting paying users. However, these tactics also drove away a significant number of free users, ultimately leading to slower growth.

For 2026, the company has decided to prioritize user growth. It projects that reducing these monetization tactics will forgo over $50 million in potential bookings, equating to roughly a 5-percentage-point hit to year-on-year growth, in exchange for a better free experience and improved reputation. The goal remains reaching 100 million daily active users by 2028.

This strategic shift is beginning to show in the latest financial results. In the second quarter, Duolingo's daily active users grew 23% year-on-year to 58.7 million, an acceleration of about 2 percentage points from the first quarter. However, total bookings grew only 8% to $289.1 million, while paid subscribers reached 12.7 million, a 17% increase. The company expects bookings to grow roughly 11% for the year, with revenue up about 16%.

It is important to note that bookings differ from revenue. Annual subscription fees are recorded as bookings at the time of purchase, while revenue is recognized over the service period. The slowdown in bookings growth suggests Duolingo is indeed moving away from its fixation on getting users to "order immediately." The key test is whether making fewer paid conversion attempts today will lead to a larger user base and more durable willingness to pay tomorrow.

Reviving Habits and the Cost-Saving Potential of AI

In June, Duolingo launched a "streak revival" event aimed at re-engaging lapsed users. The app's gamified design rewards daily lesson completion with a "streak," a record that serves as both a source of achievement and a key motivator. The event allowed eligible users to complete three lessons to restore their longest-ever streak. As a result, 15.4 million people had their records restored, with nearly 8 million of them having already broken their streak before joining. Management reported that the retention of these returning users has been better than the typical re-activated user group, offering initial support for the "improve experience first, then grow" strategy.

However, the number of restored records does not directly translate into new daily active users or new paying customers. Financially, the crucial factor is whether these individuals will continue learning, contributing revenue through subscriptions, renewals, or advertising. While the event successfully drew users back, its financial impact will take time to assess.

Another major challenge lies in AI's dual effect on cost and competition. As AI reduces Duolingo's service costs, it also gives users new options for language practice with AI companions, raising questions about the value of its premium subscription prices. CEO Luis von Ahn has stated that the cost of an AI video call has dropped from about 30 cents to under 1 cent, largely thanks to open-source models. This reduction enables the company to gradually open features that were once exclusive to its high-priced Max tier to Super subscribers. Most new Super subscribers can now access video calls, with existing Super users expected to receive the feature later this year. The future of the Max tier is uncertain, with possibilities including differentiation through call quotas or its possible discontinuation.

The benefit of lower costs is that more users can access AI features at a lower price. Yet, this also requires an explanation to existing high-tier subscribers about what premium services Max will offer going forward. A Wall Street investor who is also a long-time Duolingo user suggested that with falling AI costs, the company needs to more clearly communicate how it will share benefits with users and how the rights of new versus existing subscribers will be adjusted.

Beyond features, the learning habit itself is a driver for payment. One user noted that the app's mascot's "creative nagging" is unlike anything he has seen in other software, helping him overcome inertia and become increasingly invested in maintaining his streak. If he misses a day, he is willing to make an in-app purchase to protect his streak. However, he also reflects on whether he is paying for actual progress or merely the peace of mind that comes from preserving a record. This highlights the dual nature of Duolingo's gamification: it can aid consistency but may also compel users to pay out of fear of losing their record. To sustain this willingness to pay, the company must ensure users perceive real learning outcomes.

To provide users more time to evaluate the service, CEO Luis von Ahn mentioned that the company has begun testing an extension of the free trial from 7 days to one month, citing observed improvements in engagement and paid conversion. Yet, a longer trial does not eliminate the underlying anxiety about being charged. When asked if she would accept a "30-day trial," a user who had already uninstalled the app expressed hesitation. While she would appreciate more time to assess the new AI features, she remains wary of the possibility of an unexpected charge catching her off guard.