Subscription Requirements

  • Supported operating systems:
    • Windows
    • macOS (Mac OS X)
    • Chrome OS
    • Linux
  • A WebGL (HTML5) compatible browser:
    • Chrome 27 or higher
    • Firefox 24 or higher
    • Microsoft Edge 18 or higher
    • Safari 5.1 or higher
  • 500 MB of free drive space
  • Headphones or speakers
  • Screen with 1024x768 minimum resolution
  • Broadband internet connection
  • iOS 7 or higher
  • Up to 1 GB available storage if downloading all four apps
  • Broadband internet connection
  • Android 2.2 (Froyo) or higher (Fire OS if using an Amazon Fire Tablet)
  • Up to 1 GB available storage if downloading all four apps
  • Access to the Google Play Store or Amazon Appstore
  • Broadband internet connection
Legacy Flash Support
  • Adobe Flash is still supported as a fallback should your browser not support WebGL (HTML5).
  • For "frozen" computers we recommend keeping the Flash cache thawed or keeping the machine thawed for the initial sessions.

CD-ROM Requirements

  • Windows XP or higher OR Mac OS X 10.6 or higher
  • 2 GB of RAM
  • 250 MB of free drive space
  • CD-ROM Drive
  • CD must be inserted in drive to run the software.
  • Data collected is stored locally on the hard drive.
  • CDs do not provide access to subscription features such as online login or iPad/Android apps.