How do I log a no-poop day?

You can mark a day as a no-poop day in Balloon to record that you had zero bowel movements.

On the Home screen, tap the Overview chart to open Day View, then choose the day you want to mark.

If you haven't added any logs for that day, tap I didn't poop.

If you've already added other logs for that day, tap Mark as no-poop day instead.

The dashed circle in the Home screen's Overview chart means a day with no poop.