I worked with Tabbt in 2014 and was responsible for an UX and UI overhaul of both, the Android and iOS app.
Tabbt makes it easy to keep track of your money. Ever been in a situation where somebody lends you a few bucks and there’s no quick way to remember who owes what to whom?
Our goal was to make remembering as easy and fun as possible. For that, we wanted the app to look welcoming and friendly. That’s why the faces of your friends are front and center. Another focus of ours was the balance between seriousness and fun. Tabbt deals with financial data, which is nothing to take too lightly, but it also shouldn’t feel like you’re using a prettified Excel spreadsheet.
That’s why we made the “social object”, the amount of owed or lent money, into something tangible. There’s a name and an icon for everything and it feels like you’re actually adding or subtracting something from your “tab”.
that's not by me, of course — who am I, Steven Spielberg? describes the whole process way better than I ever could: