Many banks have ways to categorize expenses. They all show us month to month statements and expenses and we can pull up the month we travelled, to see how much and we spent, but that's still a work around when you are trying to see what you spent during the exact dates of travel. But again, this is not helping you plan a budget and watch your expenses while you travel like a live feed.
Pen and paper
Goal: I found through research that banks have great apps categorizing expenses but not exactly helping you set a budget and categorizing your expenses during travel, while you travel. There is no real time calculator and planner for you! The idea is to set a budget, have someone (the app) watch over your expenses and tell you when you are going over or getting close to spending over the desired amount.