Orrery is an educational and reference program available for iPhone users. Developed by Jan Frischmuth, this full version app provides users with a digital 3D orrery to explore and experience our solar system.

With Orrery, users can sit back and orbit the planets, or even land on some of them, all while listening to soothing background music. The program offers smooth camera navigation, allowing users to easily explore the planets and their surroundings. The planet radii are realistic, although gas giants are proportionally downscaled for accuracy.

One of the standout features of Orrery is its realistic orbital speeds, providing users with an authentic experience of the planets' movements. Additionally, the program allows users to explore the surfaces of Mercury, Venus, the Moon, and Mars. It also includes Wikipedia excerpts for further information on each planet.

Orrery offers several customizable options, including a speed slider, date input, and an autopilot mode. Users can also choose to have ambient music playing in the background, as well as optional asteroid fields, trails, and lens flare effects. The program supports both portrait and landscape orientations, and it is localized for English and German speakers.

Overall, Orrery is a visually stunning and informative program that allows users to immerse themselves in the wonders of our solar system. Whether you're a space enthusiast or simply curious about the planets, Orrery provides a captivating and educational experience.