Features Audio Import — Upload files or import from URL Sentence Practice — Practice each sentence with playback speed control Pronunciation Scoring — Real-time accuracy, fluency, and completeness scores Phoneme Display — Word-level IPA transcription for reference AI Sentence Analysis — Translation and grammar breakdown via OpenAI (optional) Practice History — Track every attempt with scores per sentence Practice Heatmap — 365-day visual activity overview Bookmarks — Mark sentences for focused review