This free app, powered by Mendeley Data, gives you a taste of trending academic papers. Just open a new tab and you'll be informed about the most recent papers in the field you're interested in. There's no need to pay to see papers that interest you: you'll see all the most relevant, and you'll even have the option to read the full paper at no cost.

POTD is a completely free app, and it's one of the best ways to get a quick glance at how the world is thinking about a particular topic.