Editing past entries
From the app’s English Help & Guide · Reference release 1.0.8
History stays editable
Tap any date in Calendar to correct or add detail.
Opening a previous date pre-fills what you already logged. Saving updates the same day rather than creating a duplicate.
Toggle the period off if you logged a day in error. Remove a symptom, pain pin, or context item to clear just that part.
Treatment check-ins stay editable too. Open the day in Today, then tap the Treatments row inside Today's log to change saved check-ins for that date.