Vocaddict - English vocabulary

Vocaddict is a brain-science-based English vocabulary app designed to move you toward native-level English. It builds personalized quizzes from a 150,000-word in-app dictionary, reinforcing memory through regular practice.

It tells you the best times to learn for maximum retention, supports translations, and shows progress with daily graphs. Mac users can register words on the go and review them anywhere. Vocaddict Plus offers unlimited word registration and translation features via a monthly subscription.