If you use Google Drive to keep your files safely backed up in the Google cloud, pay attention as the Internet giant has just pushed an interesting little update making its iOS client a whole lot more useful for collaborative work than before.
Google Drive for the iPhone and iPad has been bumped up to version 1.4, adding swipeable images while viewing them in full screen, in addition to comments for your Google Docs files.
The first feature lets you swipe through the images stored in your Drive as you would in Apple's stock iOS Photos app. The latter capability supports viewing, creating, replying to and resolving comments in Google Docs files.
Commenting was previously available via the web interface, but not on mobile devices. The free application is now live on the App Store so go ahead and update it if you haven't already...