Currently, about 1 billion people around the world are deficient in Vitamin D. This is why i built the Sun Calculator. It measures how much sun exposure is needed in order to obtain a healthy amount of vitamin D. It measures local UV, and asks what clothes you are wearing. This allows for accurate results.

Getting enough Vitamin D isn’t as simple as just “going outside.” It’s a delicate balancing act. Stay out too little, and your body doesn’t produce enough. Stay out too long, and you risk sunburn and UV damage.

I realized that people needed a personalized approach. One-size-fits-all medical advice doesn’t work here because UV radiation changes by the hour, and everyone exposes different amounts of skin depending on their daily outfits.