REAPPLY: Sunscreen Timekeeper is a free lifestyle application available on the iPhone platform. Developed by Skull Ninja Inc., this app aims to help users develop the habit of applying sunscreen every day.

One of the key features of REAPPLY is its notification system. Users receive reminders every morning to apply sunscreen and throughout the day to reapply. This ensures that users are consistently protected from the harmful effects of the sun.

Additionally, the app recognizes the user's location and provides information about the strength of the sun's UV levels. This allows users to gauge the level of protection they need based on their current environment.

In addition to its core functionality, REAPPLY also offers valuable resources to help users care for their skin. The app provides tips and articles about skincare in and out of the sun, promoting good skin care habits.

Furthermore, REAPPLY offers product reviews on the sunscreens it tests, allowing users to make informed choices about the products they use. The app also provides links to shop for safe and eco-friendly sunscreen products.

Overall, REAPPLY: Sunscreen Timekeeper is a useful tool for those who want to establish a consistent sunscreen routine and stay informed about the best skincare practices.