Before there were daycare apps and other tools, I used Google Calendar. This method can still work today. It's simple and free!
For each family I care for, I make a Google Calendar that is private between me and the parent. I fill in the calendar with updates of what the child has done during the day, any medicine given, what was served for meals and snacks, and anything else noteworthy. Parents can check the calendar at work to see their child's progress. I don't always get to update throughout the day, so I let parents know I will update by nap time for sure. This has helped parents who like to check on their child daily.
