Piel is a health and fitness application designed for iPhone users, aimed at assisting individuals in monitoring moles and lesions for potential skin cancer risk. The app provides two simple methods for checking: users can either take a new photo of the lesion directly through the app or select an existing image from their camera roll. For accurate assessments, it is important that the photos are well-lit, focused, and centered, minimizing any background distractions.

Additionally, Piel supports both English and Spanish languages, allowing users to toggle between them during the process. It is crucial to note that the application is not a substitute for professional medical advice, and any results obtained are solely for informational purposes. Users are encouraged to seek professional guidance for any medical concerns, particularly if they suspect a medical emergency.