Open Source Dart Computer Aided Instruction (CAI) Software

Echo Loop is a free, open-source, AI-powered English learning application designed to improve listening comprehension and spoken fluency. It guides learners through intensive listening, shadowing, blind listening, and oral retelling exercises. Users can import audio files and subtitles or generate transcripts automatically using AI. The application divides complex sentences into meaningful segments to simplify comprehension. Its AI tools provide translations, vocabulary explanations, pronunciation assessments, and speaking feedback. An automated learning system schedules spaced repetition, flashcard reviews, and practice reminders. Echo Loop also tracks study duration, vocabulary growth, and speaking activity to help learners monitor their progress.