Visual Oddball

A visual reaction time task

$4.99 · Designed for iPad. Not verified for macOS.

Explore visual attention and reaction time with a simple interactive task. Visual Oddball is a simple, interactive iOS app that demonstrates visual attention and reaction time using a classic target-detection task. Users respond to a designated target color while ignoring non-target stimuli. Circles appear briefly on screen with variable timing, encouraging focused attention and rapid responses. At the end of each session, the app provides clear performance summaries and allows optional data export for personal review. Visual Oddball is designed for educational and demonstration purposes, making it useful for students, instructors, and anyone interested in how attention and response timing work in a simple, hands-on way. Key Features Adjustable number of trials and blocks Configurable target probability Brief stimulus presentation with variable timing Reaction time measurement Summary accuracy and response metrics Optional CSV export for offline viewing Visual Oddball runs entirely on-device and does not require an internet connection. Important Notes Visual Oddball is not a diagnostic or clinical tool. The app does not collect personal data or require an account. All interaction and data remain local to the device unless the user chooses to export results.

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The developer, Olave Krigolson, 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

    Accessibility

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

    Information

    Seller
    • Olave Krigolson
    Size
    • 2 MB
    Category
    • Education
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • iPad
      Requires iPadOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2025 Olav Krigolson
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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