Limit or track past edits
One thing that I have been meaning to suggest is to track latest edits somewhere. Currently, anybody in a group is able to go back to several months before and add expenses. It can be difficult to find where the change was made, and if a person is dishonest about it, it can be very difficult to pinpoint exactly where things went wrong. We discovered this problem in our apartment quite early on, and made rules about it, and thankfully none of us are dishonest :)
But I was thinking that it might be beneficial/helpful to either limit how far back people can go to add in expenses (like 1 or 2 months), or keep a list that tracks the latest changes somewhere (ie. On May 17 Paul added the following expense: "Groceries, February 20, $85").
Just a thought.

There is now a recent activity feed and more notifications you can get that will show you changes in your accounts. Expenses also get detailed notes on changes when they are updated so you can be sure you know what’s different.
Marshall