Thanks for the suggestion! I’m not sure this is quite how we’d do it, but improving multiple currency display in the dashboard is something we can look into when we have the time.
You can see our current best analysis by category by month by going to: splitwise.com
1. Either navigate the group you are interested in or All Expenses
2. Click the Trends widget on the upper right, and then view full charts
Custom defined periods would have to be a pro feature – that is very expensive computationally to do for us at present. You can also export group level data to csv via the gear in the upper right → Export as spreadsheet to do your own analysis if you want custom ranges.
I hope this helps!