应用可以在教科书上画出一个AR标记，而不会弄脏教科书，并将该书面页保存为应用中的闪卡。
功能介绍
1. AR标记跟随教科书的位置和页面的倾斜度，使其更容易绘制标记，减少错位。
2. 通过使用闪卡功能，你可以在应用程序中立即开始记忆。
3. 通过保存为闪卡，可以在没有课本的情况下随时随地继续学习。(如果你曾经保存过页面)
本应用程序使用属于以下作者的材料。
Eraser icons created by Freepik - Flaticon
Frame icons created by Royyan Wijaya - Flaticon
Image icons created by feen - Flaticon
Settings icons created by Freepik - Flaticon
Close icons created by Ilham Fitrotul Hayat - Flaticon
Save icons created by Yogi Aprelliyanto - Flaticon
Delete icons created by feen - Flaticon
Edit icons created by Pixel perfect - Flaticon
Library icons created by inkubators - Flaticon
App Store截图中的纸条图片（用于iPhone）取自以下网站。
https://studyingwithjessie.tumblr.com/post/161681531370/coffee-and-tea-studying-5100-days-of