Contour

Graphics & Design

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Contour is a geometric topology thinking training tool designed for students, working professionals, and those who want to practice focused thinking during spare moments, all interested in geometry and graphical reasoning. Features include: real-time generation of an unlimited number of one-stroke drawings (no pre-set levels); branching point filtering to avoid mindless drawing; automatic completion of straight lines (you only need to select at the forks); undoable errors with concise text feedback; and a daily challenge for easy comparison of time and records. The fun lies in predicting which path will lead to a dead end and how to minimize backtracking, rather than scoring or leaderboards. It features a Bauhaus-style hard-edged color block interface and has no login, ads, or in-app purchases.

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The developer, Chi Cong Nguyen, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Usage Data

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

Accessibility

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

Information

Seller
Chi Cong Nguyen
Size
10.6 MB
Category
Graphics & Design
Compatibility
Requires iOS 14.0 or later.
  • iPhone
    Requires iOS 14.0 or later.
  • iPod touch
    Requires iOS 14.0 or later.
  • Mac
    Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
Copyright
© Chi Cong Nguyen
  • Privacy Policy