語源で覚える英単語 4700語 is an Android application designed to help users memorize English vocabulary easily and efficiently. The app is developed by tomoyuki sato and is available for free download on the Google Play Store. The app is categorized under Education & Reference and offers a unique approach to learning English vocabulary.

The app focuses on teaching English words through their origins. For example, by learning the root word "clude," which means "to close," and its prefixes and suffixes, users can easily learn words like exclude, include, and seclude. By learning the roots of words, users can understand the meaning and usage of many words without having to memorize each one individually. The app has over 4700 words, and it covers a wide range of topics, including science, history, and literature.