11 Things You Didn't Know You Could Do With Your iPad

When you have an app open on your iPad, simply hold down the Home button to bring up Siri and say, "Settings." Siri will then bring up the settings page for that particular app.

There's no need to sign in or pay to enjoy Crackle (Free). And while you won't always see the newest movies or TV shows, there's plenty of original content and old-time favorites to keep you entertained.

With Air Display 2 ($9.99), you can use your iPad or iPad Mini as a second monitor to extend your screen real estate.

Assistive Touch gives you easy access to virtual versions of all your iPad's physical buttons such as home, sleep, volume, or lock screen. To enable Assistive Touch, go to Settings > General > Accessibility > Assistive Touch and turn the feature on.

Apple lets you take advantage of your iPad's larger screen by allowing you to switch between apps quickly using four or five fingers and dragging them sideways. You can also close out apps this way by pinching all of your fingers together.

To enable the feature, go to Settings, toggle on Multitasking Gestures, and you're all set.

With Joypad, you can play over 50 arcade-style games on your iPad using your iPhone as a controller. Just download the Joypad Game Console for iPad (Free), and the Joypad Game Controller (Free) for your iPhone.

GoodReader 4 ($9.99) is the easiest way to see your PDFs in all their glory, annotations and all. You can also mark up PDFs on your end too, and the app will automatically work with your iPhone.

Black text on a white background can be a strain on your eyes, especially at night. Why not flip them? To invert colors on your iPad, go to Settings > General > Accessibility, and toggle on Invert Colors.

There's transparency all over in iOS 7, but you can darken things up by going to Settings > General > Accessibility > Increase Contrast. Once there, you can toggle on the option to both reduce transparency and darken colors.

Facebook's Messenger app (Free) now allows you to make phone calls to your Facebook friends using Wi-Fi or your data plan.

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