The Instagram Network doesn't allow other apps to upload images. It's only allowed via the official Instagram iPhone app. Instead, with InstaDesk you can browse beautiful pictures, newest uploads of your friends, or interesting people to follow. Furthermore, you can comment on pictures, like them, download them, or watch them in slideshows. In the InstaDesk description it says: "*Uploading images is forbidden by Instagram which allows only uploads from mobile devices.* ".
InstaDesk is an Instagram Client for the Mac InstaDesk lets you not only browse your or your friends Instagram pictures, but easily explore the social graph and find new people to follow. The Instagram Network doesn't allow other apps to upload images. It's only allowed via the official Instagram iPhone app. InstaDesk can't edit images since it can't upload them to Instagram (see see #here)
InstaDesk requires an existing Instagram account. You'll need an iPad, iPhone, or iPod Touch to create such an account in the Instagram app.
Sadly, this can't be done from within InstaDesk due to restrictions from Instagram.
Instagram doesn't offer an official way for clients (except for their own iPhone App, of course) to access news. So the InstaDesk news support is limited and not as broad as the iPhone app. InstaDesk shows you only news for comments and likes on your images and if your account gains a new follower. It doesn't show you when somebody writes your name in a comment on a different image (from someone else) for example.
InstaDesk can't display as many news as the Instagram iPhone app, due to Instagram api limitations (see #here.) This means that if you just purchased the app, it can't show you any news since it doesn't have access to old / previous news.
InstaDesk respects your followers call for privacy. If you follow someone who is set to private (i.e. you had to apply to follow him/her), then you won't be able to download or share his/her images.
InstaDesk requires a Mac running Mac OS X 10.6 or higher.
Sadly, uploading images is forbidden by Instagram which allows only uploads from mobile devices.