Spending time outside in sunlight can be good for your body as long as you don’t risk overexposure. Sunclipse Shadow is a simple wearable device that monitors your UV exposure in real-time and notifies you when to apply sunscreen.
The app has 5 activity modes and tracks your UV exposure history over time. It also shows how much battery the Sunclipse Shadow has left. More info is available on Kickstarter.