Although the popular messaging app WhatsApp hasn't been refreshed for the larger displays, Facebook updated Messenger with native iPhone 6 and iPhone 6 Plus support. Messenger 13.0 came with release notes that simply stated "Now updated for iPhone 6", meaning that the enlarged Camera Roll bug and a security flaw, which caused more expensive calls through the app, have been tweaked and fixed.
Another important app that was updated today for for the iPhone 6 models was Amazon's Kindle. Kindle 4.5.1 includes the support for the iPhone 6 and 6 Plus, along with various bug fixes and stability improvements. Amazon updated the Kindle less than 24 hours after the public release of iOS 8 with notification center widgets, which included shortcuts to recently read books.
Both Facebook Messenger and Amazon Kindle are free in the app store. A bit of a side note, Amazon recently launched its Kindle Unlimited service at $9.99 per month, which is basically the Netflix of e-books and audiobooks.
