If you're an owner of an Android device running at least version 4.0 of the platform, then you should be familiar with its data usage tool. Baked right into the system itself, it lets you easily keep track of how much data your smartphone and its apps have consumed over the course of your billing period. But if you need a tool to monitor data activity in real time, and more specifically, to tell you how fast bits are actually being transferred, then you'll need an app built for the purpose. And you know what, we have just the thing. The handful of apps we've picked are made to display upload and download rates for easy monitoring. Take a look!