Antenna TV is a multimedia application developed by Sepuos Labs. This application allows you to find lists of various streams going all around the world.
Through the internet, many people are streaming various live TV shows and sports using online streaming technology. Antenna TV is an application that helps consolidate all those links into one place so you can find the content you're looking for and then save it in a list afterward.
Overall, Antenna TV is a good way to find the content you're looking for if you can get it easily but you'll often find that these live streams are never of the best quality.