The Учить Английские Слова app, developed by Umma Apps, is a free education and reference application available on Android. The app contains a list of 15,000 popular English words, sorted according to popularity and frequency of use in both American and British English. With a simple and effective technique, users are shown English words with transcription, along with five translation options, and are required to choose the correct translation. The app features a small group learning approach, where users learn words in groups of 25, starting with the most popular and progressing to the more rare and difficult ones. Users can also skip 100, 500, 1000, or any number of words and start with more complex ones if they already have prior knowledge of English. The app also allows users to skip words they already know, making it a personalized learning experience.