v1.0.1 : You got able to see the display that is under the judgment marks of the quizzes. Because the colors of the judgment marks, X and circle, became transparent.
v.1.0.2. : Each quiz has ten questions and on the quiz screen you got able to see the number of the question such as 1/10, 2/10, and 10/10.
v1.0.3 ・・・bug fixed
v1.0.4 ・・・You got able to answer a quiz again and again until you give the correct answer.