What makes frameworks like Detonator or the Terrain Toolkit not work for iPhone?

Are they totally broken on Unity Iphone or is it just some tweaking you have to do to get them working? Do they work on Unity Android?

I'm surprised the Detonator framework doesn't work on iPhone. Just a guess is that some of its shaders are too expensive for iPhone.

You cannot use terrains on iPhone or Android, so logically so you cannot use the terrain toolkit.