Todd Fincannon

Deploying System Dynamics and Excel models on Windows, Mac, mobile, and web

About Todd Fincannon

If you want to teach people a new way of thinking, don't bother trying to teach them. Instead, give them a tool, the use of which will lead to new ways of thinking.

Buckminster Fuller
I work with your team to get your models out into the world. We design a user interface that makes your model easy to understand and interact with. Then we turn it into a web application, installable Windows and Mac apps, a mobile app—or maybe all of the above.
Unique tools that I developed turn your Vensim model into C or WebAssembly code, or translate your Excel spreadsheet into JavaScript on the fly. This allows your model to be embedded in a custom, cross-platform user interface. We can run your Vensim model on Linux using Ventana software too.


Click each screen shot to see the live app. Most of them look best in full screen. C-ROADS World Climate runs a Vensim model converted into C code via a REST API on a remote server. Energy Policy Solutions runs a Vensim model on a server using Ventana’s Linux library. The Science-Based Targets tool and Carbon Target and Profit Calculator are Excel models that run in a web app. Climate Pathways is an iOS universal app written in Swift.


Call Me
+1 415 651 4545
Berkeley, California