Route planning for iPhone

[Rutter]

I’d like to plan a route using google maps or similar taking a custom route of decent roads. Then when out on the bike I'd like to be able to access them via my iPhone as Sat Nav to get turn by turn instructions, does anyone know if such an app exists for iPhone? And if not what else do people use?

I have searched google and can see plenty of people have asked this but without having a specific Sat Nav I can't seem to find any answers for iPhone or even android, if the best answer is to indeed buy the tom tom app then i'm fine with that as long as I can plan in advance on a larger screen or on ipad at least.

[Rutter]

Jeff J said:

Try GPS CoPilot, it works for me on iPhone 4

Can I create a route on the PC in advance?