Apple has a strict no adult content policy for the App Store, but the recent increase of social sharing services is making it impossible for the company to police every app available for iOS devices. Apple recently pulled the popular photo-sharing app 500px because users were able to access nude images. The app was eventually allowed back into the App Store, but its removal prompted Apple to makes its App Store age ratings more visible to users. Some apps like the video sharing service Vine, have also been slapped with a 17+ rating due to people uploading adult content to their profiles. Luckily for parents there is a way to block children from downloading mature rated content, however, parents should still monitor what their children are doing with their mobile devices.

For example, Snapchat allows users to send pictures and texts that are deleted within seconds after being seen. The app has been criticized for misleading kids into thinking it's safe to send compromising photos because they will eventually disappear. However, anyone who knows how to take a screenshot can easily save an image sent to them through the app. Snapchat does alert the sender if a screenshot has been taken, but by that point the damage has already been done.

The official LEGO Batman: DC Super Heroes iOS game is now available for download through the Apple App Store. Players can choose between 80 playable characters (after they're unlocked or purchased through the app's in-game store) like Green Lantern and The Flash to do battle with DC's most notorious villains. The game also features plenty of abilities to master and fun gadgets, like Batman's Batarangs, to play with.

LEGO Batman is the first LEGO iOS game to feature voiceovers for the mini-figs, and it also offers the ability to switch between “Classic” and “Touch Screen” controls. Other features include Retina display graphics, standard achievements and Game Center support.

There's no shortage of different ways to capture and share photos with the iPhone. One thing the camera cannot do is snap a light field photo. These images, pioneered by Lytro, can be refocused after they are recorded. Now with FocusTwist this capability can be simulated on the iPhone.

The app creates refocusable images by snapping several photos in a row, using different focus settings for each one. After they are combined by FocusTwist, you can share a link to the resulting image on Twitter. People viewing your work can then focus on different parts of the scene, much like the result of using a Lytro camera.

Wireless carrier AT&T is making progress on its goal to deliver 4G LTE service to over 300 million people by the end of 2014. The latest announcement brings the total number of markets with 4G LTE availability to 190 nationwide. LTE service has been expanded in Denver, Colorado, Louisville, Kentucky, Mount Vernon, Washington and Oxford, Mississippi.

For customers in six other cites, LTE has been switched on. These include Flint, Michigan, Kokomo, Indiana, Morgantown, West Virginia, Petersburg, Virginia, Shelbyville, Kentucky and Springfield Missouri. AT&T continues to be the second largest wireless carrier in the US, six years after it first launched the iPhone in an exclusive agreement with Apple.

The official Iron Man 3 game for iOS devices is now available for the iPhone and iPad. Unfortunately the game is an endless runner, but it does feature some pretty amazing graphics (check out the trailer below) and notable Iron Man villains like Crimson Dynamo, Living Laser, and M.O.D.O.K.. You can also research and develop up to 18 Iron Man suits, and upgrade your armors and powers in the Stark Industries research lab... Plus it's free!

The game has been released about two-weeks before Iron Man 3 the movie hits theaters on May 3, 2013. The film follows Tony Stark and James Rhodes as they battle a terrorist called the Mandarin. Iron Man 3 is directed by Shane Black (Kiss Kiss Bang Bang), and stars Robert Downey Jr., Ben Kingsley and Don Cheadle.