The Hand Wash app can be downloaded on the Galaxy Watch 4 and Galaxy Watch 4 Classic through the Google Play Store. In addition to reminding people to wash their hands regularly, the Hand Wash app also automatically detects hand washes and offers a timer for quality washing. It also provides a dashboard where users can see how many times they have washed their hands on a given day.
The app has a file size of 18MB and can appear on top of other apps to display the wash timer. It is not compatible with non-Samsung Wear OS smartwatches.
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SamsungGalaxy Watch 4 (40 mm)
SamsungGalaxy 4 Classic Watch (42 mm)