Travel and vacay season is coming up with Christmas and New Year around the corner. And most of us will be travelling with friends and family. Although it is fun to shed the monotone of daily life and add some colour with a vacation, one tends to go overboard with expenses without realising it. And keeping track of all the receipts can be quite tedious. To make things easier and keep a track of what and where you spend, here are some easy-to-use expense-calculating apps to keep your vacation within budget.