I’ve been tracking my finances for ~15 years using one spreadsheet. It supports everything I need:
- monthly credit card bill/expenses tracking
- currency conversion
- group purchases (e.g. grocery items)
- transfers among my accounts
- balance for each account
- spending categories
- monthly averages
You can download this in Excel or Open Document format, if you trust yourself with your data (replication, sync, backups and encryption) more than Google.