PolyChat

PolyChat is a mobile language-learning app that includes Vietnamese among its supported languages. It’s best for beginners and early-intermediate learners who want a Duolingo-style routine but also want extra tools like an AI chat tutor and a translator in the same place.

Inside the app you work through short lessons, then reinforce what you learn with timed vocabulary challenges and verb conjugation practice. It also tracks words and phrases you’ve unlocked in a personal dictionary, which can be useful if you like seeing measurable progress.

The standout feature is the AI chat tutor with roleplay scenarios (travel, ordering food, introductions) so you can practice producing Vietnamese, not just recognizing it. The main limitation for Vietnamese learners is that it doesn’t teach a specific Vietnamese dialect, and the experience is very app-driven, so if you want real human feedback on pronunciation and natural phrasing you’ll likely need to supplement it. You can start on their website and then use the iOS or Android app for the full experience.