Google Voice app finally makes it onto the iPad and iPod touch
You can use all the app's features on the iPad and iPod touch, save for actually making phone calls. However, you can use it on an iPad or iPod touch to initiate a call on your phone(s). Google calls this 'Click2Call' and it works like this: you click any 'Call' button in the Google Voice app for iPad or iPod touch, and select which of your phones you want to ring. Then, the selected phone will ring, and when you pick up, you'll be connected with the contact you wanted to call.
The Google Voice app for iOS has received a few other improvements as well. For example, if you choose to enable Push Notifications, text forwarding will be automatically disabled, so you won't receive multiple notifications. A 'Do Not Disturb' option has showed up in the Settings tab, and enabling it will allow you to send all callers to voicemail. The Dialer tab now has a dedicated Contacts button, and sending messages doesn't require a tap on the OK button anymore.
Using the Google Voice app for iOS requires a valid Google Voice account, and an iPhone, iPad or iPod touch running iOS 3.1 or newer.
Download Google Voice for iOS from the iTunes App Store