The things I recall are as following :
No fancy design - there are categories for spending and income and each purchase is categorized under one of them when entered.
Currency used by the app can be customized .
It's either free or has a very low monthly fee.
No mobile app but a simplified version can be accessed on mobile mainly for entering purchases.
Would love to go back to using it again, but somehow with switching mobile phones and other stuff, I can't find it ... Hope you'll be able to help me find it :)