While basically a full-featured Instagram client, Itsdagram did not offer the filters that allow Instagram users to change the look of their pictures. Users also did not have their own profile page. Did the lack of these features cause the developer to decide to go back to the drawing board?
With Itsdagram on the sidelines for now, Windows Phone users can try recently launched Winstagram. This app simply uploads your pictures to Instagram and nothing else. You will need to use another app to view your pictures after they are uploaded, so keep in mind that this is not a one-app does all Instagram client, and will cost you $1.99 to download.
source: WindowsPhoneStore (1), (2) via WPCentral