Spectrum 3 4 is an Android app developed by Oxford University Press ELT. It is a four-level English course designed for Secondary School students, offering a fresh and engaging approach to learning English. The Spectrum VocApp, available for free download, provides a fun and flexible way for students to learn the key vocabulary items presented in the Student's Books' units.

The VocApp offers a range of useful features to enhance the learning experience. It provides pronunciations and example sentences for all words and expressions, allowing students to practice their listening and speaking skills. Additionally, it offers a choice of translations in Spanish, Catalan, Basque, or Galician, making it accessible to a wider range of learners.

To test their knowledge, students can take advantage of two types of quizzes: multiple choice and gap fill. These interactive quizzes provide an opportunity for students to reinforce their understanding of the vocabulary and track their progress. The app also includes a feature for top scores and favorites, enabling students to keep track of their achievements and revisit challenging items.

With a user-friendly interface, Spectrum 3 4 is designed to be accessible and easy to navigate. It is compatible with Android devices running Android 4.4 KitKat and above, with a screen resolution of 426dp x 320dp (minimum) and 960dp x 720dp (maximum) pixels. Whether at home or on the go, students can learn English anytime, anywhere with Spectrum 3 4.