Learn vocabulary with scientifically spaced repetition based on the 17-day GRE method, featuring 8 review intervals and automatic reminders. View word roots and affixes. Edit definitions and examples.
by Joseph Works Limited★ 4.82,592 ratingsEducationFreeData updated 2026-09-11
Learn through an adaptive spaced repetition system that adjusts review intervals based on recall performance. Study symbols, names, and periodic table relationships with structured lessons.
Reference offers access to thousands of historical calligraphy works for study and practice. Includes high-resolution scans of famous calligraphy pieces for download.
Shanghai Haidi Digital Publishing Technology Co., Ltd.
Look up words with camera or voice
Look up words using camera, voice, or notification bar. View definitions, pronunciations, and word examples. Explore character structure, stroke order, and English translations. Collect new words and review them for memorization.
Learn new words with definitions, example sentences, and pronunciation. Test knowledge with quizzes and progress tracking. Customize vocabulary lists and set review reminders. Sync across devices and share lists with others.
Learn Chinese with synchronized textbook content, including point reading, listening, and pronunciation practice. Practice handwriting with official stroke animations.
Learn medical terms through interactive . Review definitions, pronunciations, and word roots. Test knowledge with quizzes and progress tracking. Sync study sessions across devices.
Learn vocabulary with natural example sentences, native audio, and detailed explanations. Practice using spaced repetition study mode. Access all content in one . No ads. One-time purchase.
Language with phonetic and original script words recorded by a native speaker. Save favorite phrases for easy review. Study vocabulary using flashcards with spaced repetition. Take quizzes to test knowledge and review scores.
- provides detailed word definitions, examples, and pronunciation support. Users can search vocabulary offline, access samples, and view simple explanations. Pronunciation requires internet connection.
Read short English articles daily to build vocabulary and learn practical expressions. Access graded texts, exam passages, and TED talks with bilingual subtitles. Practice with quizzes, grammar explanations, and listening exercises.