This app is the android version of the famous VOCABULARY SIZE TEST. The Vocabulary Size Test (VST) (Nation & Beglar, 2007; Nation 2008) is a valid reliable test of written, receptive English vocabulary size. It is a multiple-choice test that is designed to measure test-takers’ knowledge of the 14,000 most frequent word families of English. The test consists of 140 items, and there are 10 items for each of the 14 frequency bands from which the target words have been sampled.

For ease of use and display, the test has been divided into 2 sets, SET 1 and SET 2. Each set offers 7 quick MCQ test. Unlike the online versions of the test, test-takers are allowed to take it at as many sittings as they wish, with no time constraints. Their progress is saved once they start a test, and the final test score is also saved to calculate their final vocabulary size. Too, test-takers are given immediate feedback for their answers.

This app comes with these activities.

The Main Activity: it offers buttons which you can tap to move around the app.
The Set 1 Activity: it offers the first 7 K tests, numbered K1, K2, K3, ... K7. Each K test consists of 10 items. Once you take the test, your score and the percentage is displayed next to the K button.Once you take the 7 tests, the total score and the percentage for the set is displayed at the bottom.Once you finish SET 1 tests, click the NEXT button to go to SET 2 Activity.
The Set 2 Activity: it offers the second 7 K tests, numbered K8, K9, K10, ... K14. Each K test consists of 10 items. Once you take the test, your score and the percentage is displayed next to the K button.Once you finish SET 2 tests, click the NEXT button to go to the Result Activity.
The Result Activity: this shows your score for set 1, set 2, and your vocabulary size, i.e how many words of the 14,000 most frequent word families of English you know.