Used the app for my trip through South America. I paid for the pro-version, which for me was totally worth it. Lots of things are configurable like trips with multiple currencies, categories, convertion rates (if you’re not happy with the given ones), start and end date, budget and travellers. Adding and changing expenses is super easy. You can even split an expense for multiple days. The statistics provided out of the box are displayed in a nice and easy readable way. If those are not enough for you they are downloadable via CSV for your own calculations. I had to transfer the app data from one phone to another which was super easy. Unfortunately I had a problem, unrelated to the app, but the support helped me anyway very fast. In the future I’d love to see a small calender somewhere to not only switch between days but only months and years.