Hey I was wondering if there was a way to add gpsPhone or any other jailbroken app if you add the .app file, but you're not jailbroken. Please do not post any ROMS or any files that are not allowed. If not then that is fine but that would be pretty cool.
As far as I know, there isn't. Why not just jailbreak? It's not that hard...I could help you along if you need it. http://www.iphonedevsdk.com/forum/iphone-sdk-development/40916-install-apps-iphone-without-jailbreak.html