Проверка английского в фоне (English Check in the Background) is an Android application developed by Vasilenok Pavel. This free app is categorized under Education & Reference and is designed to help users learn English vocabulary conveniently. With a built-in voice synthesizer, the app can automatically play over 6,000 English words and translate them into Russian. The app also has a brief course on 1,000 words and a complete course on 6,000 words, including irregular verbs, expressions, and more.

Overall, Проверка английского в фоне is a helpful tool for those who want to improve their English vocabulary. With its voice synthesizer and translation feature, learning English words is made more accessible and convenient.