The true power of the iPad is said by many to be present in the gorgeous 9.7-inch screen. Apart from games, sadly there are very few apps that bring out the beast hidden in the display. So all iPad owners who want to push the envelope should download the 500px app. Developed by 500px themselves, the app is a portfolio-building network, rather than a photo-sharing service, which offers users quality over quantity. So unlike Flickr, Picasa and other photo-sharing networking sites, 500px aims at encouraging users to upload and publish the cream of the crop with detailing riding it to the finishing line.