It's strange to think back to that not-too-long-ago time when the iPad didn't exist, seeing how well we've managed to integrate it into our lives. Whether it's browsing the web on the couch, typing up documents in a cafe, or amusing ourselves with apps while traveling, Apple's sleek tablet can serve a lot of different purposes. It all depends on what you put on the iPad, and thankfully, there's no shortage of worthwhile apps that don't require a penny to start poking around in. Here are our picks for the 25 best free iPad apps, which span a variety of genres and needs, and include everything from content creation to social media and pure entertainment.