Vocabla is a vocabulary learning website and mobile app. It’s similar to Quizlet, another flashcard site/app.
Here’s a review of the site:
First, find a set of words you’re interested in learning/practicing at the Library. There are many sets of vocabulary words to choose from: TOEFL and TOEIC, and also vocabulary from songs, movies, news articles, business, and even TED Talks. Start with the trending lists and see what people are studying.
Once you choose your vocabulary set, you’ll get three options: Flashcards, Guessing and Writing. Flashcards are for learning the words (and you can hear them pronounced), so you get no points. Guessing and Writing will quiz you and you can earn points.
It looks like you can take tests on the mobile app, and you can add new words manually, but you don’t have the Library from which to choose new lists.