I am traveling with three friends to Germany and Czechia in May/June. I am the organizer for the group, and I am prepaying some of our expenses.
I am looking for a good expense sharing app for iPhone that does not require all travelers to use the app. One of my trip mates is tech-averse and will not likely download an app, so some of the popular apps wouldn’t work in this case. I haven’t found a spreadsheet template that really does what I want.
What are your suggestions (short of requiring me to depend on pad and pen)?