This app was mentioned in 2 comments, with an average of 2.50 upvotes
an app that let's you divide up expenses between multiple people over multiple currencies and provides a simple report of who owes who at the end. Lot's of powerful features involving partial splits and the like.
I use "Travel Money"
https://play.google.com/store/apps/details?id=org.marbot.travel.money.free
> This is the free version, which allows to save up to 50 payments per trip. If you like this app, you can unlock unlimited payments without losing your data.
Edit: it provides currency conversion cheaper than "settle up", but it can be a little buggy when syncing and doesn't have a desktop/web version. It does have export to CSV. The interface can be a little fiddly if you aren't splitting a cost 50-50.
How does splitwise handle multiple currencies?