Instagrab is a free app for iOS that lets you save, share, repost or shoutout photos and videos from Instagram. The app supports batch save, and it lets you share Instagram photos to Facebook and Twitter. You can also search via names or search photos via tags. You also have the option of following or unfollowing any user.
This is a convenient way to save photos and videos from Instagram to your iOS device. You can download Instagrab from the iTunes store. Currently the app has a user rating of four stars, and has been rated by 453 users. So it seems to be getting a pretty strong endorsement from its user base.
Additional resources for Instagrab
Additional resources for iOS