Finally, a wearable UV sensor that is clinical-grade

Other sensors fail to mimick the skin's sensitivity to sun exposure, giving erroneous measurements. The Shade sensor solves this by correctly weighting UVB and UVA and behaves just like your skin.

Try our sensor risk-free
wearable uv

Finally, a wearable UV sensor that is clinical-grade

Too much UV exposure leads to serious consequences, such as skin cancer or immune reactions. Measuring accurately your sun exposure may help you stay ahead.

Try our sensor risk-free
Comparison wearable UV sensors

Our technology is proven to work

To be useful, wearable UV sensors must work accurately in the sun, under clouds, and in the shade.

Developed by PhDs and funded by the National Cancer Institute, the Shade UV sensor provides accurate results 10x more often than many other sensors. Our research is published, peer-reviewed, and scientific.

Download publication

Daily UV limits for each individual

UV sensitivity varies widely between individuals. Our app starts by introducing you to generally accepted UV limits based on skin type. You can also choose a setting suggested by a trusted advisor or your physician.

As you use our wearable UV sensor, you can fine-tune the daily limit directly in the app, to a level that works just for you. The app will notify you in five steps as you approach your limit. With these warnings, you will always be one step ahead.

wearable uv sensor
"Love my Shade sensor!"
Morgan H. (with a 1st-gen. sensor)

Our customers are delighted.

Using a Shade UV sensor provides an unprecedented peace of mind.

Hundreds of people are using Shade to better manage their sun exposure, and love how accurate and useful the sensor is.

Read more reviews

Top universities use our sensors

Our sensors have been used at Northwestern Medical School, Weill-Cornell Medicine, Hopital Europeen, among others. Using Shade UV sensors, Dr. Stump et al. validated a new metric to measure "unprotected" time in sunlight.

Try our sensor risk-free

Are you planning a clinical study?

Please reach out to us at or through the chat bubble. In addition to making raw UV exposure data available to researchers, we offer an observational app on both iOS and Android unobtrusively collects behavioral UV data without showing it to your study subjects. This app has been used to monitor the effectiveness of behavioral interventions and to collect data on user behavior without relying on recall and memory.

There is a nominal fee for study setup and data access as well as an academic discount.