I have used e-sword on my desktop for years. I havent found a better resource for Bible study anywhere. Im thrilled that I can put it on my iPhone now. It has a wealth of resources, including Josephus, the anti-nicene fathers, and more Christian books than Ill ever be able to make use of. And its free! Im happy to contribute to the development of this excellent resource.
KWSauter about e-Sword LT: Bible Study to Go, v5.0