How to insert Timestamp or Grid History?
Tap “⊕” icon on the bottom menu in your grids
Tap "Insert Timestamp" to insert timestamp, there are 3 formats to choose from.
Tap "Grid History" to add your previous content under the same prompts
If you click "Insert Grid History" under the "Today's To-dos" prompt, then you can choose one of your previous Today's To-dos contents to add.