Freefall HD app for iPhone and iPad

4.8 ( 9698 ratings )

Reference Education
Developer: Advanced Analytic

4.99 USD

Current version: 1.2, last update: 7 years ago
First release : 13 Feb 2011
App size: 28.84 Mb

Freefall HD is a virtual planetarium. It includes planets, the moon, stars, constellations, deep-sky objects, and satellites! Choose a location on earth and the time, and Freefall HD will show you whats up in the sky.

Freefall HD uses industry-standard SGP4 and SDP4 algorithms to predict satellite motion. Accurate satellite predictions require occasional updates using a free Space-Track account, but calculations for the other celestial objects do not.