Unspent - Track your spending money. Keep it simple.

Tworlds - Swap photos with strangers around the world, anonymously

Pennies - Incredibly simple personal budgeting app for iOS

Just a Minute - A web experiment to see how well you can estimate a minute.

Habitual Money - Graduate from spreadsheets and train your financial muscle 💪Effortlessly track and categorize your spend across your Amazon, Venmo and daily transactions 👌Personalize everything via custom categories and automate your money via our smart-rule engine…

The Evolution of Trust - an interactive guide to the game theory of why & how we trust each other