A free program for Android, by Sohid Uddin.

Yoruba Dictionary Offline is a free offline app for Android devices. It allows you to look up words and their meanings in both English and Yoruba – a name of an ethnic group in West Africa, particularly inhabitants of Nigeria, Togo, and Benin. This platform is designed to be used in both academic settings as well as in non-academic environments.

This dictionary app contains features such as instant scanning capabilities, English grammar tutorials for topics such as tenses, sentence structure, narration, etc, 24 levels of quizzes, mixer MCQs, 60 categories of organized words, and the option to backup and restore data.