Which groundbreaking loyalty feature did Duolingo introduce in 2017 that revolutionized user retention in language learning apps and has since been widely adopted across the industry?

Language learning apps have transformed how people engage with new languages, creating innovative loyalty programs to keep users practicing consistently. These programs combine gamification, streak-based rewards, and community features to maintain user engagement. Beyond basic point systems, the most successful language platforms have developed sophisticated loyalty mechanisms that both motivate learners and provide valuable usage data. How well do you know the strategies behind language app retention?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The streak-freezing power-up that allows users to maintain their practice streaks even when missing a day
The language exchange marketplace where users earn credits by helping others learn their native language
The neural pronunciation analyzer that rewards users with bonus points for near-perfect accent replication
The linguistic NFT collection where completing courses earns unique digital language artifacts