No Facetime App iPhone 4

There is no separate FaceTime app for the iPhone.
To initiate a FaceTime call with a contact, select the contact and choose FaceTime instead of call, share contact, or text message.
To start a FaceTime call during a regular call, there is a FaceTime selection on the screen available for that as well.
 MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD Mac OS X (10.6.5)  iPod w/Video 30GB,  iPhone 4 32GB

It is not an app:
http://support.apple.com/kb/HT4319
powerbook g4, iMac 20 Mac OS X (10.6.4) Time Capsule, iphone 3gs, iphone 4, ipod, ipod touch

Well on my sisters iTouch 4g, she has a Facetime icon on her homescreen, right next to the camera icon. I dont have such an icon.
HPdv2000 Windows 7 I love my laptop.

You have an iphone, she has an ipod touch.
Read the link I gave you.
powerbook g4, iMac 20 Mac OS X (10.6.4) Time Capsule, iphone 3gs, iphone 4, ipod, ipod touch

Oh okay, got it, thanks!
Can I Facetime with my sister on her Touch though?
HPdv2000 Windows 7 I love my laptop.