Полиглот: английский по книгам is an iPhone application developed by Konstantin Baryshev. It falls under the Education & Reference category and is available for free. This app aims to help users improve their English vocabulary and reading comprehension skills.

The main feature of Полиглот: английский по книгам is its ability to help users memorize words in context. Users can read texts of interest, mark familiar words, and translate unfamiliar words using the built-in translator. They can then practice and memorize these words through effective exercises.

The app offers various sources of texts for reading, including a built-in library, the ability to download and read texts from any website, and the option to paste text from the clipboard. Users can also engage in exercises such as direct translation, reverse translation, and listening comprehension.

Полиглот: английский по книгам provides statistics on the user's vocabulary, words being learned, and progress made. This allows users to track their learning journey and see which words they already know and which ones they need to focus on.

Please note that an internet connection is required for word or phrase translations.