I just got my hands on the app for the iPhone and it was inexpensive which is a good start.
Works great and no problems so far.
It works as a text composition tool with all your snippets available. I have not tried to pull in the snippets yet from my Mac but with the snippets on the phone it works a treat.
When you have composed your text you have a button to sen off as an email or you can copy the text and then paste it whenever you can paste text in your iPhone.
I like it and great to be able to save time entering text on the iPhone