The Event Log and reverting a change
A record of everything that happened to your tasks, notes and lists.
The Event Log is the record of everything that has happened to your tasks, notes and lists, newest first. You find it under Settings → Event Log, in the browser, in the Mac app and on your iPhone. Each line names what happened and to what, with when it happened, and a line that kept the earlier value offers Revert.
What is listed
Every change to your content, whoever made it: you, the operator, an automation, or an agent you connected. One line per action, in the product's own words.
A task created, completed or reopened, its title, due date or reminder updated, moved to another list, deleted, restored, archived or unarchived, added to or removed from favorites, shared or unshared, and the people who join or leave it.
A note, or an item of any other list, created, updated (the line names the properties the update touched), moved, deleted, restored, archived, favorited or shared.
A list created, renamed, updated (its icon, instructions, layout or properties), deleted, restored, archived, favorited or shared, and who joined or left it.
An import, as one line per import.
An action on many things at once is one line, such as "Created 6 items: Movies to watch", never six.
Two things are not in the log. The body of a task or note, because it autosaves while you type: its history is version history. And the operator's own bookkeeping, which changes nothing you own.
Opening what a line is about
Pick a line and it opens the task, note, item or list it talks about. Something that has left the workspace, deleted or archived, opens as a read-only preview instead, and an archived one carries Unarchive there. A deleted one shows when it was deleted and stays recoverable for about 30 days, as the article on deleted tasks, notes and lists describes.
The log is read fresh each time and holds nothing on your device. Load more at the bottom reaches further back.
Reverting a change
A line that kept the value it replaced offers Revert beside the time: a task's status, title, due date or reminder, a move between lists, an update to a note's or an item's properties, a list's name or icon, and the operator's updates. Press Revert and Roma writes the earlier value back through the same door any update takes, so the revert is itself a new line at the top of the log, and every rule still holds, such as who may edit a shared item.
If the thing has changed again since that line, Roma says so first: "It has changed since." Revert anyway puts the old value back over the later change. Keep leaves it. Lines that record something coming into being or going away, a create, a delete, a share, have no Revert: those have their own way back in the app, such as restoring a deleted task. A line written before Roma kept earlier values offers none either. Revert is in the browser and in the Mac app.
What the operator knows about it
The operator reads the same log. Ask what you finished yesterday, what you added this week or what was deleted, and it answers from these lines, grouped by the task or note they belong to.
On the iPhone
Settings → Event Log shows the same lines. A line whose task or note is on the phone opens it on top of the page.
Questions people ask
Can I undo a deleted task from the Event Log?
A delete has no Revert, because a deleted task has a way back of its own: it stays recoverable for about 30 days. Pick its line to see the task in a read-only preview, then restore it the way the article on deleted tasks, notes and lists describes.
How far back does the log go?
As far back as your account. Nothing in it is purged, and the log stays with your account until you delete the account. Load more at the bottom reaches older lines.
Is the log the same on every device?
Yes. It is one record on your account, read fresh each time you open the page, so the browser, the Mac app and the iPhone show the same lines. The one difference is Revert, which the browser and the Mac app offer.