Duolingo users bypass ads and restore hearts with offline lesson trick

Duolingo users can now restore lost hearts and block ads by using a simple offline trick, Android Authority reported on Tuesday. The method involves turning off the device’s internet connection, completing a lesson to refill hearts, then reconnecting to resume normal use without the usual ad interruptions. The workaround works on both Android and iOS versions of the language‑learning app and has quickly spread across forums and social media.

The hack matters because Duolingo’s free tier has become increasingly restrictive. In 2022 the company introduced a “hearts” system that limits the number of mistakes a learner can make before a lesson ends, and in early 2024 it began serving video ads between exercises to boost revenue. Many longtime users complained that the ads break concentration and that losing hearts forces them to either wait for a timer or pay for a subscription. The company’s push for its paid “Duolingo Plus” plan has been met with criticism, prompting users to search for ways to keep the free experience usable.

The offline method exploits the app’s design: when the device is not connected, Duolingo cannot verify ad impressions or heart status, allowing the heart counter to reset after a short cooldown. Users report that a single 30‑second offline session can refill up to five hearts, enough to finish a lesson without interruption. Android Authority’s testing showed that the ad blocker works consistently, though it may stop after a few days as the app updates. Duolingo has not publicly addressed the trick, but internal documents leaked in 2023 reveal the company expects ad revenue to account for 15 % of its total income, making any widespread circumvention a potential concern.

If the workaround gains traction, Duolingo may patch the loophole in a future update, as it has done with similar exploits before. In the meantime, the trick gives free users a temporary reprieve and highlights growing tension between the app’s monetisation strategy and its educational mission. Observers say the episode could force Duolingo to rethink how it balances ads, hearts, and subscription incentives, especially as competitors like Babbel and Memrise vie for the same learner base.