Syncing apps from iPad to iPhone

Sync them to iTunes from the Ipad. connect the iphone and then sync them to there.
iMac 2.66Ghz, 2.66Ghz MacBook Pro, iPhone 4 Mac OS X (10.6.5)

There are apps that are for iPad only. These apps includes but not limited to Keynote, Pages, Numbers, etc. To sync those that are supported by both devices just plug in your iPhone and it should sync automatically. You can also go to the Apps tab in iPhone preferences to see which apps are iPad only and universal.
MacBook Pro & MacBook Air, LED Cinema Display, Wireless Keyboard, Magic Trackpad Mac OS X (10.6.6) Time Capsule 2TB, iPhone 4 32GB, Aperture 3, Final Cut Express 4

Thanks guys but that bit has been done already!
Do you mean to tell me that most Apps are not available for both and we have to buy 2 versions just to use them on both appliances?????
What a rip off!!!!
iMac & iPad & iPhone4 iOS 4

Most apps are compatible with both the iPad and iPhone - the overwhelming majority, but not all.
As already provided, Pages, Numbers, and Keynote are compatible with the iPad only.
 MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD Mac OS X (10.6.6)  iPod w/Video 30GB,  iPhone 4 32GB