Update to Instagram allows you to save posts to a private page to view later1
The new feature is found on version 10.2 of Instagram, available in the Apple App Store and the Google Play Store. Other parts of this update include live streaming Instagram Stories, which started rolling out to U.S. subscribers earlier this week. And another new feature allows Instagram users to send disappearing images to friends and family (ala Snapchat).
Instagram is slowly morphing from the social media site where you would post a picture of your lunch for all and sundry to see, to a more rounded social media site that can offer features like live streaming video for your Stories.
Download Instagram to your device by clicking on the appropriate link.(iOS|Android).