A free program for Android, by Build Project.

The knowledge test app (which includes both Gujarati and English grammar tests) can help you prepare for examinations or make the most of your free time. Whether you’re studying for a school exam or simply want to broaden your general knowledge, this smartphone app truly has something for everyone. This free educational Android app is the best general knowledge test app, with 5000+ questions and correct answers. It is helpful for MCQ examinations, as well as school and college-level exams. Answers are provided so that you can evaluate your performance. Geographic and historical information about India, Gujarat, and the world is included in general knowledge!