- The application is divided into 5 levels. To start a level, the user must complete the previous level.
- Every incorrect question is asked 3 times for (Learning, Reviewing, Checking) purpose.
- The user can not finish the level without answering all the questions.
- Every completed level can be reset and played again.
- Mastered questions are also shown for better learning.
com.github.f0ris.sweetalert:library:1.5.2 com.google.code.gson:gson:2.8.0