As I understand it, it acts as a reporting tool for errors that occur in your web app. For example, when a user encounters an exception you get notified about

As I understand it, it acts as a reporting tool for errors that occur in your web app. For example, when a user encounters an exception you get notified about it while at the same time squash gives you a nice interface to view how many times the error occurred, where in the code it occurred, etc.