The app shows the sky for an user defined point of time and an arbitrary location on the earth:

- sun and moon
- over 9000 stars
- constellation lines
- constellation names in English, Latin or as abbreviation
- constellation boundaries
- all eight planets of the solar system
- azimuthal grid
- equatorial grid
- horizon
- ecliptic
- celestial equator

The location can be entered manually or is provided by the device. There are several options to enable or disable elements of the chart, select t