Vortex Planetarium is described as '- Discover the sky' and is an app in the Education & Reference category. There are more than 25 alternatives to Vortex Planetarium for a variety of platforms, including iPhone, iPad, Android, Android Tablet and Mac. The best alternative is Stellarium, which is both free and Open Source. Other great apps like Vortex Planetarium are Sky Map (Free, Open Source), Gaia Sky (Free, Open Source), KStars (Free, Open Source) and Sky Guide (Paid).
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go.
3D simulation of the Solar System and night sky - real time virtual orrery and observatory Features: - Heliocentric view with real-time positions of planets and planetary orbits - Schematic and realistic sizes of the planets and distances between them - Movement of the...
SkySafari is a powerful planetarium that fits in your pocket. It puts thousands of stars and planets at your fingertips. It lets you find objects in the sky using your device's built-in compass and accelerometer.