EYD: Ejaan Yang Disempurnakan is a free Android application developed by Bali Media under the Education & Reference category. The app is designed to help Indonesian speakers improve their spelling skills by providing a comprehensive guide to the rules of Indonesian spelling.

The latest edition of the app is based on the guidelines provided by the Minister of National Education of the Republic of Indonesia and includes features such as the use of letters (alphabet, vowels, consonants, etc.), writing words (basic, derivatives, combined kata, etc.), use of punctuation (signs point, comma, contacts, etc.), writing elements uptake, and guidelines for beheading words. The app is easy to navigate and provides a user-friendly interface for users to learn and practice Indonesian spelling rules.