What is the name of the software that can count days in iphone?

The software in the iPhone that can remember the date is called "Dedication Sign":

1. Create new content after opening the engagement sign.

2. You can choose to display the new time/edit time.

3. You can see the specific time of adding, modifying and deleting content in the timeline.

4. You can set a reminder to prevent you from forgetting the date.