The "Protect Hand : Protect Health" app is a free Android app developed by Tripti, falling under the Lifestyle category and Health & Fitness subcategory. The app's main function is to scan your hand and detect bacteria and harmful substances that could be present in your hand and body.

The app reminds you to wash your hands every day and helps you protect yourself and your family from bacteria and harmful substances present in the air. It also reminds you to wash your hands when coming into contact with dangerous areas or when you come home from outside.

With "Protect Hand : Protect Health," you can always ensure that your hands are clean and safe, thereby, keeping personal hygiene to protect the health of yourself and your family. Overall, the app is user-friendly and straightforward to use, making it a must-have for anyone who is concerned about their health and wants to keep themselves and their family safe from harmful bacteria and substances.