Although Apple's new iPhones have been in stores for more than a week now and developers are scrambling to update their apps with native display support for the iPhone 6 and iPhone 6 Plus.
And while users are still waiting for an iPhone 6 optimized edition of WhatsApp, the social networking giant Facebook has now updated the Messenger iOS app with native iPhone 6 support.
Another important piece of software has also received its iPhone 6-focused refresh today, Amazon's Kindle for the iPhone and iPad. Both Facebook Messenger and Amazon Kindle are available free of charge in the App Store.