Redshift - Astronomy is described as 'Redshift brings the night sky to your screen. Explore alien planets, enhance your knowledge with detailed information on astronomy and space travel - and never miss an important celestial event' and is a Star Map in the education & reference category. There are more than 25 alternatives to Redshift - Astronomy for a variety of platforms, including iPhone, iPad, Android, Android Tablet and Windows apps. The best Redshift - Astronomy alternative is Stellarium, which is both free and Open Source. Other great apps like Redshift - Astronomy are Sky Map, KStars, Gaia Sky and Sky Guide.