A free app for Android, by Manjul Saini.

English Vocabulary Builder offline app is an educational game that lets you learn new English words using its interactive Flashcard Quiz format and improve your English Vocabulary every day.

The app consists of a series of questions, each one related to a certain concept. You have to answer the questions by selecting one of the options available.

The answers are then divided into two parts: the correct answer and the incorrect answer. Once you have selected the correct answer, you will receive a notification that you have chosen the correct answer.

The game will then be divided into several levels, each one more difficult than the previous one. At each level, you will receive a new word, and your task will be to answer the questions by choosing one of the available options.

Each word will be accompanied by its meaning, example sentences, and synonyms.

You can also mark any word as your favorite word to quickly view it later.

The app also has a search function, which will allow you to search the words that you want to learn by using the speech recognition function.