Where do I see what changed, and how do I comment?

Activity lists what happens in your groups, newest first, by day: expenses and payments added, changed, deleted or restored, comments, people added or leaving, groups created, deleted or restored, and changes to a group itself, such as its name, notes or cover photo, which show as the group being updated. An edit to an expense or payment says what it changed. Tap an expense there to open it; anything else opens its group, or the friend's page for what is just between you two.

Each expense also says who added it and when, and when it was last edited. Every expense and payment has a History below it, listing each change with who made it, when, and what it changed.

To comment, open the expense, type in Add a comment under Comments and send it. Everyone in the group can read it, and members with Group activity notifications on are told a comment was added. A comment can't be edited once it is sent.

To delete a comment of yours, swipe it to the left, or touch and hold it, and confirm. It keeps its place in the thread as Comment deleted, and its words leave everyone's phone once it syncs; you can Restore it for 30 days. What it said is erased from our server 30 days after it was deleted. An owner or admin of the group can delete anyone's comment: it then says who deleted it, and only an owner or admin can restore it. Each shows in Activity, and members with Group activity notifications on are told.