You may already have heard of this awesome Revision Slider add-on for Chrome. It's a free extension for your desktop versions of the browser. It will give you all the details you need to make the best decision.

The first thing you'll notice about Revision Slider is that it’s a tool that makes you more self-aware. The numbers don’t lie, and you can check how much time is left to revise before your exams. What’s more, the extension supports a wide variety of topics, so you don’t need to choose only a single subject to be aware of the time.

With it, you can split your time and study for exams into multiple chapters. The tool makes it easy to share the results with your friends.