Cropping a screen capture on the iPhone normally requires several steps to get the desired image. After all, every time you snap a screenshot by pressing the power and home buttons the entire screen area is captured to the Camera Roll. The jailbreak tweak ScreenshotPlus changes how this works, so you can pre-crop any screen capture before saving.

Once installed, ScreenshotPlus only has one setting to configure. This option toggles whether or not the tweak displays the dimensions in pixels of the cropped screen shot selector box. In order to use ScreenshotPlus, an Activator gesture must be assigned to "screenshot mode". Once configured, enter screenshot mode by performing the selected gesture.

Apple has made it easy for developers around the world to follow along with each day of the 2013 Worldwide Developers Conference (WWDC). The official WWDC iOS app has just been updated to version 1.01 with a series of bug fixes and improvements. Of course, to get the most out of the WWDC app you must be a registered developer so you can sign in and watch session videos.

Tickets for this year's conference at Moscone West in San Francisco sold out in just two minutes. Luckily with the WWDC app developers can stay connected to the event. Times and descriptions for labs, sessions and special events can be browsed and favorited, with session videos becoming available daily. Session videos are synced between devices, so if you stop watching a video it can be resumed where you left off.

Sometimes iPhone owners need help making a decision. Nowadays with so many purchases happening exclusively with plastic, there aren't always stray coins lying around to flip. What luck, arguably the most advanced, portable personal assistant ever created can now flip a coin for you instead. Tell Siri to flip a coin and she'll do just that, letting you know immediately whether it was virtual heads or tails.

There are some other tricks you can use to get help with random numbers or even play games when you're missing a pair of dice. You guessed it, just tell Siri to roll the dice and she will tell you which side of the six-sided dice are facing up after the roll. Ultimately when you need two random numbers from 1-6 or one number from 2-12 this can be handy (simply add the two for a bigger number). But what if you need a larger random number?

Looking to emulate GBA/GBC games on your iOS device? Another hidden emulator has sneaked into the App Store until Apple catches on and pulls the app. The app is called Slider Puzzle, and it masquerades as an innocent sliding puzzle game with four different images.

Players can put their own images into the app via iTunes to see them converted into new puzzles. The real fun happens with a series of inputs that activates the hidden GBA/GBC emulator. The great thing about this secret is no jailbreak is required to play ROMs right on your iPhone, iPad or iPod touch.

Rumors of Apple's upcoming iRadio streaming music service aren't new, but the latest developments indicate Apple will move forward with its plans next week's WWDC. AllThingsD reports that Sony Music has joined the party, which means all three major music labels are now participating in the service.

The last piece of the puzzle, Sony follows Universal Music Group and Warner Music Group, who have both cut deals to license their music collections to Apple. According to Billboard Apple will give the record companies 10 percent of iRadio's advertising revenue as an introductory rate. The company will also pay a per-stream rate above the Copyright Royalty Board statutory amount.