KStars is described as 'Accurate cross-platform astronomy simulation and astrophotography tool with Ekos suite, observation planner, "What's up Tonight", adjustable simulation speeds, and more' and is a Star Map in the education & reference category. There are more than 25 alternatives to KStars for a variety of platforms, including iPhone, iPad, Android, Android Tablet and Windows apps. The best KStars alternative is Google Earth. It's not free, so if you're looking for a free alternative, you could try Google Earth or Stellarium. Other great apps like KStars are Gaia Sky, Sky Guide, Solar System Scope and Planetario.