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There’s a huge difference between UV at 9am and 1pm a they require different strategies, particularly if not going out for very long in the morning and afternoon.
Many other apps do this. An all or nothing approach isn’t helpful.
Response from developer
Hello, thank you for your feedback. We are always looking for ways to continue improving the app's features for our users and we will pass this on to our technical team for future consideration. When the UV hits 3, sun protection is recommended.