Here's an example of what I'm talking about: suppose you and a housemate decide that an equitable split for the electric bill is 65/35 based on usage habits. One person pays the electric bill every month. All of these finance apps will download the transaction, categorize the electric bill for me, and maybe apply a custom tag. But I have to manually calculate the amount owed to me, and manually reconcile that with the fact that the other person pays the water bill.
I'd love to find an accounting app for shared arrangements, but it seems like most are targeted to solo or completely joint finances. Monarch listed elsewhere in these comments is the closest I've seen, but it also doesn't support reconciling split transactions.