新东方乐词考研四六级背单词软件 is an English vocabulary learning app developed by Leci Inc. It is designed to help users prepare for exams such as the New Concept English, English proficiency tests (CET-4 and CET-6), and postgraduate entrance exams. The app offers a wide range of word databases, including those for IELTS, TOEFL, GRE, SAT, ACT, GMAT, TOEIC, and Business English.

The app utilizes the Ebbinghaus forgetting curve and allows users to upload their own memory methods for effective word memorization. With the offline word bank feature, users can conveniently learn new vocabulary even during their daily commutes or while waiting in line. Additionally, the app provides detailed word explanations based on the commonly used definitions in exams, accompanied by pronunciation, illustrations, and example sentences. The "Study Together" feature allows users to create study groups and motivate each other to achieve their language learning goals.