Last time I checked, the ads on the web were alright, but the experience on mobile was extremely hostile, with constant ads and deliberately sssssllllooooowwwll

Last time I checked, the ads on the web were alright, but the experience on mobile was extremely hostile, with constant ads and deliberately sssssllllooooowwwllllyy aaanniimmmaaaattteeeeddd reminders to push you to pay for Duolingo Plus. When reviewing lessons you're already familiar with, you tend to spend more time watching ads and Plus reminders than actually learning anything.