Error Book

Study Book

Free · Designed for iPad

Welcome to Error Book, your essential tool for mastering math by revisiting and correcting your mistakes! Designed specifically for students, this app helps you organize and understand the complex problems you've previously gotten wrong, making everything simple and straightforward. Key Features: - Create and name your own folders for each subject or topic. - Add photos, handwritten notes, and reminders directly inside each template. - Set learning goals (“Targets”) and check them off daily with a tap. - Use “Check NOW” to mark your study days. - Add upcoming exams, assignments, or goals with a specific date. Download Error Book now and take the first step towards mastering your math skills! Let’s transform your mistakes into learning opportunities and enhance your understanding of complex topics, all while making everything simple!

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1. Add the camera function for adding photos.

The developer, Chak Ho Wong, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    • Seller
      • Chak Ho Wong
    • Size
      • 1.1 MB
    • Category
      • Education
    • Compatibility
      Requires iOS 18.6 or later.
      • iPhone
        Requires iOS 18.6 or later.
      • iPad
        Requires iPadOS 18.6 or later.
      • Mac
        Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 2.6 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2025 Error.Book Inc.