This application is designed based on the Leitner Box algorithm (Spaced Repetition System – SRS) to help transfer words into your long‑term memory.

In this method, about 3,000 selected and commonly used Oxford English words, along with their usage in sentences, are presented to the user at standard spaced intervals in both audio and written forms. The user is then tested to ensure that the meaning, pronunciation, and usage of the words are firmly retained in the learner’s memory.