Clozemaster

Clozemaster is a web and mobile app that teaches languages through cloze tests, meaning you fill in the missing word in real sentences. It fits best if you already know some Vietnamese and want lots of repetition in context, not step by step beginner lessons.

You pick a Vietnamese collection and play short rounds in multiple choice or text input mode. The app tracks what you miss and brings it back later using spaced repetition, so it works well as a daily vocabulary habit.

For Vietnamese, the built-in content can be smaller than in big languages. For example, the Vietnamese Random Collection is about 3,516 sentences, so you may run out sooner and need other resources for listening practice, speaking, and curated grammar. If you subscribe, Pro removes daily limits and adds more features, and the Explain button uses AI to break down sentences when you get stuck.