This looks pretty cool, and as a frequent traveller I’d love to try it out!
I’m holidaying in Canada and the USA for the next three weeks (instead of work for a change!) and knowing how much I saved in real terms from exchange rates is a useful piece of information.
More generally when I’m travelling for work, this sort of summarised report is great to help me figure out what I need to give to my company in terms of receipts and expense reporting. A step further than this would be to allow exporting of expenses data directly for use in another “company approved” expenses tool (Expensify, Concur, Excel sheet etc).