Google Voice in iPad?

I can find this [here](http://itunes.apple.com/us/app/google-voice/id318698524?mt=8) but I cannot find it in iPad. How can I use Google Voice in iPad? > **Perhaps related** > > 1. https://apple.stackexchange.com/questions/27101/can-the-ipad-2-be-used-for-everyday-telephony > > 2. https://apple.stackexchange.com/questions/43120/is-the-3g-network-used-by-the-ipad-the-same-as-the-4g-network-used-by-the-iphone