Is there a way to go back and mark a chore that was completed on a previous day?

Is there a way to go back and mark a chore that was completed on a previous day?

Yes, you can go back and give S'mores for chores that were completed in the past.  

1. From the Family tab, tap Chore Progress.

2. You will be taken to the Weekly Report screen. Completed chores are marked by a green check mark, and the red x icon shows chores that have not been completed. Tap on the chore you wish to mark as complete.

3. Tap Mark as Complete. 

4. The chore will now have a green check mark to show it has been completed. 

Note: The benefit of completing chores from the Chore Progress screen is that you can complete multiple chores at once.