A free app for Android, by Sagar Rawal.
Mnemonic is an android application designed for students of classes 11 and 12, and teachers who teach in this class. The app contains a large number of questions that are very difficult to solve by conventional means. To solve these questions, you need to use your memory to recall the answers to the questions. It is designed in a way that even a first-year student can use it to improve their memory and cognitive abilities. The application consists of 7500+ questions divided into five sections, which include:
1) General Science
2) Life Science
3) Mathematics
4) Physics
5) Chemistry
The application is designed to help you improve your grades in school.