What is JustWatch and how does it help with streaming?

JustWatch is a free streaming aggregator website and app that tells you which streaming service carries any given movie or TV show in your country. Instead of searching across five different apps, you can search once on JustWatch and see everywhere a title is available, including whether it is free, subscription, or rental. It is an invaluable tool for cord-cutters managing multiple services and deciding which subscriptions to maintain.