Did you know breast cancer has 12 signs?
If this is new to you, you really need our charity’s breast health app.
Are you on the right screening plan? Our app will help you do that and more.
Named the Best Health and Fitness app of 2025, the Know Your Lemons app is fun to use and a literal life-saver. Here’s how:
The Know Your Lemons app may just be the most important app you’ll ever have on your phone.
Download it today or share with someone you care about.
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Our Global Impact for Early Detection
Trained Volunteers
Charity Partners
Countries
Campaign Reach
We work with amazing people to educate about breast cancer.
Would you be one of them?
Individuals
Volunteer, teach, donate or become a social media ambassador.
Volunteer →
Campaign Sponsors
Join our campaign and expand our programs through sponsorship opportunities to save lives in an unprecedented way.
Support Campaign →
Employers
Increase screening and early detection in your workplace with our breast health solution,
Know Your Lemons at Work.
Save lives at work →
Healthcare Practitioners & Patient Organizations
Join our Global Partner Network, and educate patients and the public with our co-branded materials to increase screening and early detection.
Become a partner →
To save lives from breast cancer, we have to think creatively
After losing her grandmothers and a close friend to breast cancer, our founder Dr. Corrine Ellsworth Beaumont, PhD MFA created a new way to design breast health information that would be engaging, overcome taboo, and save lives on a global scale. Her doctoral work resulted in our amazing #knowyourlemons campaign that has now been seen by more than 2 billion people in 45 languages, and our app that was named the best in the world for Health and Fitness in 2025!
Our charity’s global mission
We save lives from breast cancer by providing well designed education for early detection. Our creative approach has made all the difference for these women:
"Seeing your poster in my doctor’s office quite literally saved my life, and potentially the life of many other women I’m sharing it with.”
“My self exams improved greatly after discovering Know Your Lemons. The techniques I learned helped me discover breast cancer at its earliest stage!”
"Knowing the signs and symptoms pushed me to be proactive in my health and that's all thanks to the Know Your Lemons Foundation"
