I can see how this would be a huge help for people who have many friends with the same name who refuse to add their last name to their accounts! This isn’t on our roadmap yet, but it’s something we’ll consider in the future.Rohit Kumar commented
This has been a wanted feature for over six years now and it doesn't look like SplitWise and its team has the willingness or the knowledge of how to implement it. WhatsApp has the right idea in this regard where it shows you a contact as you have saved it. It works even in groups. One-sixth of the world's population lives in my country and man it's a problem if I can't distinguish between my friends or call them by my chosen name at least for my own reference.
If somebody else comes around with the feature, let me tell you it would take us just one round of settling all outstanding bills before taking off SplitWise and canceling our pro subscription :-(
... or at least show the friend's email address wherever feasible to start with.
Storing bank account #s is unfortunately tricky, as there are some serious security concerns around bank #s here in the US and in some other countries. Still, we’d like to do it if possible. It’s not on our roadmap yet, but we’re definitely considering it for the future.