Duolingo launches Tinycards memory-boosting app on Android

Duolingo, the heavily funded startup best known for its range of online language-learning courses, has launched its standalone memorization app on Android.
The Pittsburgh-based company first introduced its Tinycards app to iOS last summer, but now the company is making the app available to millions more people with the Android launch.
Tinycards is essentially a flashcard app that uses spaced repetition to help users memorize things. Yes, this could be a language — Duolingo’s raison d