show a person still owes if their payment is pending
Person is shown as settled up, but I haven't received the payment yet and it's shown on "pending".

I’ll pass on this suggestion as well! It’s a bit tricky, since we want to avoid causing confusion in the opposite direction (i.e. I owe you $100, I send you $100, and then Splitwise still says I owe you $100), but there may be a way we could better indicate “pending” status.
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Floris commented
I have a similar issue where somebody has done a payment to me, but it is still pending. Perhaps an extra category stating pending payments would be nice. And an option to remind those person that the payment is still pending and that something might have gone wrong.