In Tizen, an app named the Hand Wash App was released. It would remind people to wash their hands regularly. This same app, with no changes, has been released for the Galaxy Watch 4 and the Watch 4 Classic.
It can be downloaded using the Google Play Store, and auto-detects when you wash your hands and can be made to set a timer for washing your hands properly. It can also show how many times a certain person has washed their hands in the day. The app is a low 18MB and can appear on other apps.
During this pandemic, the app has been used a lot now to remind people to wash their hands, and even say how many times they have washed their hands by detecting if you are moving your arms in a certain way to rub soap and water onto your hands.