People hate adverts. In fact 74% of people think that there are too many ads — could be why 46.2% of us use ad blockers. Duolingo AdSchool turns adverts into bite-sized lessons built into your daily routine, making it easy to stay motivated and cutting fluency time from 4.2 years to just over 1. We do this through the AdSchool plug-in that works across your desktop, phone and other devices, targeting users where they spend their time. As well as using NFC enabled billboards to take over ads and bring Duo’s lessons outside.