MK Vocab is an Android app developed by MediaKids that focuses on improving English vocabulary skills of students. The app offers basic functions such as vocabulary learning, testing, and reporting results. The vocabulary is arranged in a series according to the class level of the reader, and the learning is appropriate to the perception without being compressed, allowing free space for learners to absorb new words.

The app is designed based on the study of the characteristics of vocabulary learning, where a child must know three things that are shaped - sound - meaning connected together. MK Vocab takes this into account and helps students learn new words with ease. With its user-friendly interface, students can easily navigate through the app and access the vast collection of words available.

Overall, MK Vocab is a free app that is ideal for students who want to improve their English vocabulary skills. It is a great tool for educators as well, as it provides students with a fun and interactive way to learn new words.