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Did You Get Enough Light Today?

Decades of research prove that getting bright light in your eyes is an effective treatment for insomnia and depression. See The Wall Street Journal and The New York Times.


Bright Light and the Human Brain

Light works through our eyes. (This is different from how vitamin D is produced, which is by UV light reaching our skin.) When bright light enters the eyes, it stimulates specialized receptor cells in the retina that have connections to the suprachiasmatic nucleus in the brain – the "master pacemaker." From there, the effects spread – more widely than doctors and scientists once thought.

Bright light sets the rhythms of our bodies, our minds, and our lives. When those internal rhythms are out of sync with our day, we feel "social jet lag." But it’s not just a feeling. "Circadian synchronization" improves sleep, mood, alertness, cognitive performance, and well-being.

SunSprite infographic

Scientific studies over the last 30 years have concluded that light therapy is just as effective as antidepressant medication not only for seasonal depression (SAD) but also for non-seasonal depression. And further research has found that bright light may also benefit a wide range of medical conditions including insomnia, ADHD, Parkinson’s disease, and dementia.

Light is easy to get – if it's bright enough, you only need 30 minutes a day. And because the beneficial effects of bright light come through your eyes, you don't even need to be outside. Small lifestyle changes, like eating your breakfast while facing a sunny window, can make all the difference.

For a more in-depth look at the hard science behind bright light and its benefits, check out the White Paper and article in the Harvard Review of Psychiatry written by our medical co-founders, who are Associate Clinical Professors, Part Time at Harvard Medical School and who recommend bright light to their patients in their private practices.

How SunSprite Helps You


Indicates if light is bright enough to benefit your health


Shows your progress toward your daily goal

Make small, simple changes.

Actual insights reported by our users:

Elizabeth learned she couldn't get her light at her breakfast table. Now she starts her day in a sunnier room and no longer has trouble falling asleep.

Working with her therapist, Mary found her depression was better when she got at least 70% of her daily light.

Steve, like many of our users, found that he got 0% of his light on a typical day in the office.

One button. Instant feedback.

Press side button to see your daily progress.

Each LED represents 10% of your daily light progress.

If the next light is flashing, you're in bright enough light.

Once you hit 100%, SunSprite does a victory dance!


Sync Your Stats Wirelessly

Set goals, view trends, and earn badges

App gives personalized coaching

iOS and Android compatible (see specs)

iPhone screen shot of dashboard
(Dashboard screen)
Android screen shot of history
(Weekly history screen)

Developed by Doctors

Light and UV information is based on 30 years of scientific research.



SunSprite runs on sun, just like you. No cords or plugs. No batteries to replace.


Get Feedback

Instantly know your progress via the LED display and mobile app.



Clips anywhere, never needs to be plugged in, one simple progress check button.

I work from home, typically paying zero attention to the world (or sun) outside my little dungeon. A few days of rocking my SunSprite has turned me into my dog: noticing all the sunny slivers in my apartment and basking in them a bit. I love it, even if she's getting annoyed that I'm stealing all the good spots. Added bonus is that I've also become a human sundial, which is a fun party trick.


Are You a Clinician?

SunSprite can help your patients.