MarkSheet: answer sheet

An answer sheet application for mark sheets (bubble sheet).
You can freely set the number of questions and choices.
Easy scoring and multiple answers are supported.

Functions/Features
- Answer Sheet for mark sheet (bubble sheet) type
- Number of questions and choices can be freely set.
- Choices include uppercase letters (A-Z), lowercase letters (a-z), numbers (+,-,±,0-9)
- Multiple answers supported
- Fill the mark by tapping the choice
- Line highlighting (long press or checkbox)
- Press the Start scoring button, tap the option and enter the answer
- Press the End scoring button to display the number of correct answers and the correct answer rate
- Press the menu on the bottom right or the button displaying the percentage of correct answers to restart/reset mark input/scoring
- Share as a CSV file
- Select the label screen that opens at startup
- Manage answer sheets with labeling, search, and sorting functions
- Long press to select multiple sheets, delete/label selected sheets
- Duplicate sheet
- Change the opacity of mark fill
- Change the size of marks and text
- Customization (dark mode, theme colors)
- Simple design based on Material Design

Recent changes:
- Added a feature to change the opacity of mark fill
- Bug fixes