Sun Clock HD is a lifestyle application available on iPhone that displays the sun's location on a world map. It is an ad-free version of Sunlight Clock Free. The app provides various projections for rendering the map, including Mercator, Mollweide, azimuthal equidistant, and others. You can also choose to have the map follow the sun or your current location.

The app is easy to use, and its interface is straightforward. You can see where the sun is shining on the map in real-time, and you can also check the time of sunrise and sunset for any location. The app is well designed and provides accurate information. Overall, Sun Clock HD is a useful app for anyone who wants to keep track of the sun's location and the time of sunrise and sunset around the world.