• For Flickr users: you can look at your own photos, your sets, your favorites and your contacts and their photos. 
• Explore and browse Flickr groups
• Full screen photo browser that lets you swipe through photos and zoom by pinching. (Landscape and Portrait).
• Slideshow mode, including support for external displays (TV & VGA)
• No need for paging while looking at large photosets. FlickStackr does it automatically in the background.
• Photos are cached locally for fast access.
• Tags, exif and photo location viewing
• A unique feature is the 'Stack'. The Stack lets you mark photos from you or any other people. This stack is saved on your iPad/iPhone, so that you can keep this list without having to publish it to flickr. Useful when you want to review photos later.
• Support for having multiple Flickr accounts active. This is ideal for households sharing an iPad or for people with multiple identities online.
• Search photos in Flickr : using keyword + geographic location.
• Search public photos, or specifically owned by you or a person
• A flickr account is NOT required. FlickStackr can be used by people who just want to explore flickr.
• Stacks and searches work without an account.
• Supports all iPad screen orientations.
• As a universal application, FlickStackr is also compatible with iPhone and iPod Touch 3.0+

A free lite version is available

• Creating and deleting photo sets
• Delete photo comments

• New application icon
• Flickr video playback support
• Recent photo activity view
• Improved Upload
• Improved slideshow and swipe view
• Ability to add any set /stream /group /list /search result to the Stack
• View any user's flickr profile and add him/her as a contact
• Share links to any flickr photo on Facebook
• Comments view now shows number of Favorites
• Improved photo list views : number of views and date uploaded are displayed
• Remember recently used tags
• iOS4 compatibility
• Navigate to Home screen
• Batch download any photo list (set, stream, favorites, search result)

• Uploading photos to Flickr. Set their geo location, sets, groups
• Improved caching for faster response time
• Offline mode for photo browsing while disconnected
• Optimization of bandwidth for 3G networks
• Email multiple photos together on the same email, from the Stack
• Photo metadata editing : sets, groups, tags, location, privacy
• HTML photo comments are now fully visible
• Fixes
  • Slideshow was showing status bar
  • Square images were truncated
  • Photo comments were truncated

• Gallery management
• Photo deletion
• Groups membership management
• Further integration with Facebook + Twitter
• Improved slideshow with music and smooth transitions
• Ability to share slideshows via email.
• Free "FlickStackr viewer" to be able to play slideshows