I don't understand what this does or how it works.<p>"Using a new proprietary indexing technology, Batch is on a mission to track all the push notifications in the world and make them available in a centralized and unified place."<p>Can you track push notifications that are being sent by other applications? If so, how do you do that? Are you running a bunch of Android and iOS devices, installing apps, subscribing to push notifications in them and then gathering data that way? Or do you have a library that developers have to include in their applications?