500-wide for iOS
Upload a photo from your iPhone to 500px
Features

500-wide is a simple app for uploading photos from your iPhone, iPad or iPod touch to 500px.com.

  • Add a title and description
  • Set the category for the photo
  • Optionally add some tags
Requirements
  • iOS 5.1 or later
  • 500px account (free or paid)

Also available as a plug-in for Aperture

Screenshot