Quadruple : Sustainability app for iPhone and iPad

Your one-stop app for Sustainability Learning

Quadruple addresses the “quadruple bottom line” of sustainability: society, environment, economy, and future generations. Quadruple is your one-stop app for sustainability advice, learning and sharing.

Note: Quadruple is now free and no longer includes a travel component.
The travel component of this app has been relocated. Please see the SustyVisit app for sustainable travel.

Features include:

LEARNING section on sustainability history, definitions, methods, and tools

QUIZ to help you test your sustainability knowledge

NEWS feeds linking the latest sustainability articles

Legal Disclaimer: In no event shall the creator of this application be liable in any manner for any direct, incidental, consequential, indirect or punitive damages arising out of your access, use or inability to use this application, or any errors or omissions in the information on this application.

The creator of this application reserves the right at any time and from time to time to add, change, modify, update, or discontinue, temporarily or permanently, this application (or any part thereof) with or without notice.

The creator of this application shall not be liable to you or to any third party for any addition, modification, suspension or discontinuance of this application.