Shanghai Youqianhua Information Technology Co., Ltd.
Learn words with spaced repetition scheduling
Learn vocabulary with customizable study schedules based on the Ebbinghaus forgetting curve. Review words at intervals to improve retention. Access wordbanks for exams like Gaokao, CET-4, TOEFL, and GRE.
Learn Vietnamese with audio lessons and dictionaries
Learn Vietnamese with phonetic guides, vocabulary lessons, and phrasebooks. Access audio pronunciations, translation tools, and AI-powered text recognition. Listen to spoken content, songs, and travel guides.
Learn core subjects with short, three-minute lessons covering primary, secondary, and high school curricula. Access practice questions with detailed explanations for each topic. Review past exam papers and prepare for midterms and finals.
The app provides step-by-step solutions for math problems from pre-algebra through calculus. It includes a scientific calculator, graphing calculator, and a user-friendly editor for inputting problems.
Learn with 4800+ words to improve skills and prepare for GRE and IELTS exams. Daily word learning helps build a strong verbal . Track progress and review words for retention.
Practice English with AI conversation and feedback
Practice spoken English with AI tutors for real-time feedback on grammar and pronunciation. Access courses for listening, speaking, reading, and writing. Simulate exams like IELTS and TOEFL with AI grading.