Just to follow up my former posting below on Logos now becoming available on Iphone, Logos has now also launched a new version of their Bible Study Program. The Iphone version is supposed to be able to be syncronized with this new Logos 4 version, not the older Libronix version. In fact, Logos 4 seems to be like a new program as it does not update the present Libronix version, but runs on your computer alongside this; hence as a new program.
On the other side, those having Libronix are getting discount prices.
Further information are to be found on their special page; Logos 4.
See also the review by Ruben Gomez here.