Instagram enable users to share photos and videos directly from other iOS apps. Instagram update version 8.2 brings this new feature to iOS. Users can also add a caption to the photo or video.
Instagram share extension is easy to use, launch an app like Photos, tap the share button and swipe to the far right of the colored app icons then tap ‘More’. Toggle Instagram on, then tap done. Now Instagram will appear in the share sheet where sharing photos are supported. This works in Apple’s Photos app as well as other apps including Google Photos and the official Reddit app.
Third party app extensions have available since iOS 8.