11+ Vocabulary Builder Lite is a free educational app developed by Webrich Software for Android devices. It is an interactive quiz-style app that aims to help children boost their vocabulary by applying various study techniques. This app is specifically designed for children preparing for grammar school entrance exams in England, where 50-75% of the verbal reasoning questions are based on vocabulary.

The app covers nine commonly found types of questions, including alphabetical order, anagram pairs, antonym pairs, antonyms, combi-words, spelling errors, synonym sets, synonyms, and word out. It includes over 350 multiple-choice questions that cover over 2000 words. After each test, the user is given a summary of questions answered correctly, incorrectly, and skipped, along with the time taken on each question. Each question can be reviewed, and all questions have an explanation of the answer. Additionally, the app features a progress meter that displays current progress for each topic, an interactive pie chart, and a mock test with 50 questions.