THEMERCENARY In the past I've had good experiences using Missing Sync for Palm. Apparently that caused me to not read the product descriptions for this iPhone edition. Within several hours of purchasing I had discovered that the software simply doesn't do what I had inferred from the publisher's descriptions.
As perhaps a merely semantic point: there is no 'Sync' (i.e. synchronizing, as in keeping the data in two locations matching) going on at all.
If, as the previous poster suggests, this is a limitation that Apple has made insurmountable then this piece of software should simply not have been published under currently inappropriate name it bears.
(Version 1.0.2)