Ciyue is a free, open-source dictionary and language learning application for Android, Windows, macOS, and Linux. It supports MDict MDX/MDD and StarDict dictionary formats, allowing users to build personalized reference libraries. Multiple dictionaries can be searched simultaneously for comprehensive word definitions. Its translation tools integrate free services and AI providers such as OpenAI, Gemini, and DeepSeek. An AI chat assistant supports custom prompts and writing corrections. Vocabulary management includes word books, mistake books, review quizzes, and flashcards with FSRS spaced repetition. Pronunciation packs and text-to-speech help users practice listening and pronunciation. A floating lookup window provides quick access to definitions, while Material You styling offers a modern interface.
Features
- MDict MDX/MDD and StarDict dictionary support with simultaneous multi-dictionary searching
- Multiple translation services with OpenAI, Gemini, DeepSeek, and other AI integrations
- AI-powered conversations with customizable prompts and writing correction tools
- Personal vocabulary and mistake books with review quizzes and FSRS flashcards
- Word pronunciation playback through pronunciation packs and text-to-speech
- Floating dictionary lookup window with customizable Material You interface