Nothing special, try another app...
I have tried Carbo out for the past day and a bit on my iPad and tried to on my iPhone as well, without real luck.
So, though it set up easily on the iPad and the stench with Evernote was easy, the iPhone keeps switching off the attempt to synch with Evernote and will therefore be useless. Also, the actual handwriting recognition and taunted finesse of this app leave much to be desired. It can recognize pen on paper; but pencil, forget about it.
If you need an app like what Carbo purports to be, look somewhere else. This isnt worth the money.
BlackMacX about
Carbo › Digital Notebook, v1.0.2