dminder is a lifestyle app designed to help users track their vitamin D intake. The app uses GPS to determine the user's location and calculate when they can get vitamin D from the sun. It also provides a timer for the user to maximize their exposure time and make the most of the sun's benefits.

One of the key features of dminder is its ability to estimate the user's vitamin D levels on an ongoing basis, available in the paid version. This feature allows the user to manage their history and track their progress over time. The app is compatible with Android 9.0 and is free to use.

Overall, dminder is a useful tool for anyone looking to improve their health and fitness by tracking their vitamin D intake. Its GPS-based calculations and timer make it easy to use, and the ability to estimate vitamin D levels is a valuable feature for those looking to make long-term improvements to their health.