HackNao English: AI Coach

HackNao English helps you build real English skills — vocabulary, speaking, listening and grammar — with a private AI coach that runs entirely on your device. WHY HACKNAO ENGLISH • Learn anywhere: core vocabulary works fully offline, no account required. • On-device AI: pronunciation and grammar feedback are processed on your phone. Your voice is NOT uploaded to any server. • Stay motivated: daily streaks, an activity heatmap and progress tracking keep you coming back. WHAT YOU CAN DO • Vocabulary by topic — explore 1500+ essential words and phrases grouped by real-life themes. • AI Speaking Coach — record yourself and get instant pronunciation scoring plus suggestions to fix mistakes. • AI Grammar feedback — write or speak and let the on-device coach point out and explain errors. • CEFR Level Test (A1–B2) with a fast Quick Test to find your starting point. • Shadowing — speak along with native video to improve fluency and intonation. • Listening practice — train comprehension with curated audio. • Dictation — listen and type to sharpen spelling and listening together. • Explore hub — every learning mode gathered in one place. PERSONALIZE • Multiple theme color presets and light/dark mode. • Interface available in English, Vietnamese, Korean and Japanese. PRIVACY FIRST The AI pronunciation and grammar features run on-device. We do not sell your data, and your recordings stay on your phone. Start learning English the smart way — download HackNao English today.