In a move to help people detect skin cancer early, The University of Michigan has created a new iPhone app that lets you give yourself a skin cancer exam. The UMSkinCheck app helps people who are at risk for skin cancer to track growths or potential pre-cancers using frequent photos and exams.

Using the app is simple. Following its guide, you begin by taking a quiz to determine your risk level for skin cancer. Then you take 23 photos of different parts of your undressed body under bright lights. Then based on your risk level, you take the same photos every 30-90 days. The photo document can help you track any potential lesions or moles.

The app also has detailed descriptions of melanoma and examples of common skin problems, to help users detect malignancies. It also includes advise on how to avoid skin cancer. (Via The Atlantic).