Browse and view photos or videos from Instagram and 500px

Instagram features

- Browse popular photos
- Search photos by tag
- Search users by name
- Browse your photos, followed users, and liked media
- Like/unlike a photo
- View comments of a photo
- Slideshow photos
++ External display slide show (Pro version only)
++ Random order slideshow (Pro version only)
- Show a photo geo-location if available
- Share a photo via email, Facebook, Twitter or Sina-Weibo (iOS 6.x or greater)
- Save a photo to camera roll
+ Save a video to cameral roll (Pro Version only)
+ No ad banners (Pro Version only)
- An Instagram account is needed to avoid Instagram query limit.

500px Features

- View rating-based streams (Popular, Upcoming and Editors' choices)
- View time-based streams (Today, Yesterday, and Week)
- Search photos by terms and tags
- View the blogs from 500px.com
- Create a new blog and edit an existing one (Pro Version only)
- Follow/unfollow a photo owner
- Search users
- View a user's friend list
- View a user's blogs
- Fullscreen photo feature
*** slideshow photos
---- pacing control
---- sequential or random control
---- show/hide photo caption & photo owner name control
---- external display slideshow (Pro Version only)
*** view a photo's comment and make a comment
*** Share a photo by Facebook, Twitter(iOS5.0 or higher), and email
*** Add/remove a photo from favorites
*** Vote(Like) a photo
*** View a photo's location if available
*** View a photo owner's photo stream, friends's photos and favorites
- User-based features
*** View friend list and friends' photos
*** View your follower list
*** View your photo streams
*** Upload photos
*** View your favorite photos
*** View your friends' photos
*** View Collections (Portfolio & Profile Sets)
+ No ad banners (Pro Version only)

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The app is not developed by either Instagram or 500px