We just added a very basic calculator function to our web app, so you can now use basic mathematical operations when entering a cost (addition, subtraction, multiplication, and division). We hope to add similar features to our mobile apps at some point in the future!
We’d love to make Splitwise better for tracking personal expenses (though we’re mostly focused on splitting for the time being). For now, your best bet is probably to make a new group for personal expenses, with yourself as the only member.Souvik Kundu commented
This should be a pro feature