College can be extremely expensive — not just with tuition and dorm costs, but with materials, books, software, and more. You might think you have to spend lots of cash on apps to get you through your degree. But, really, you don’t have to spend any money at all! (Except in rare situations where you need a very specific software for class, in which case your college should ideally provide you with a license for it.) Here’s a truly useful collection of free apps that are must-haves for students like you, allowing you to outfit your college laptop with the essential tools to get your work done a…