Today Google updated Google+ app for iOS to support the iPad and iPod touch, Last month native Google+ app for iPhone was released which does not support iPad and iPod Touch, devices two devices that the app would previously not install on. The new update does not bring an iPad optimized interface, but it does deliver additional settings for Huddle, aggregated circle add notifications and performance and stability improvements.
Google+ for iOS Updates:
You can grab the update now by visiting the App Store or updating the existing app on your iOS device.
Download Google+ App for iDevices