The IELTS Vocabulary Prep App is an Android-based vocabulary builder app designed to help those preparing for the IELTS exam. Developed by Smart Learning Solutions, this free app aims to improve English vocabulary for people who are preparing for the test. The learning technique applied in this app allows users to learn new words quickly, up to 3000 per month, which are often used in the IELTS tests. It also provides more than 60,000 words usage examples in context that will help users get high bands in the IELTS Reading and Speaking modules.

The app includes individual lessons schedule, English learning flashcards, and dictionary search. It also has a big set of tests with various difficulty levels so users can test their new knowledge and share it with friends. Moreover, each word comes with full English definition, up to 10 usage examples, phonetics, sound pronunciation, and much more details included in the Oxford Dictionary. The vocabulary builder app uses spaced repetition method inside to ensure that users can retain the learned words for a longer period.