Have you felt the satisfaction of finishing a good book and wanted to share it with your friends? The Kindle app for iOS certainly hopes so, having recently added an accomplishment announcing feature.
As well as Facebook and Twitter integration, the February 14 update includes a built-in rate and review option.
The Facebook and Twitter functions bring the Kindle app's social networking up to speed with that of Apple's own iBooks app, while Kobo's ereading app can also post to the Facebook timeline.
Kindle for iOS: https://itunes.apple.com/us/app/kindle-read-books-ebooks-magazines/id302584613?mt=8