I was in need of a simple personal finance app to oversee what I spend. Other applications I've seen were big, complicated, ugly and chart/report hippies. I've sold to Koku's idea of simplicity, tags, quick entries and simple graphing approach.

After using it for some time I've understood that I've done the right choice. When you start to enter your expenses you instantly fall in love with the application. Bit by bit it builds your financial picture and since the tags are selected by you, program also morphs according to your needs and becomes a bit more personal than a personal finance application.

I can strongly recommend Koku to anyone who wants a casual yet extremely powerful and intuitive personal finance application with a beautiful interface.