Our first iOS application, Eye Tide, is now available on the iTunes App Store. Eye Tide provides tide predictions, as well as sun/moon rise/set times, for hundreds of locations around the USA, rendered as tables and charts.
We have a long list of improvements in mind for iTide, and we're interested in ideas and suggestions; please feel free to contact us.
Eye Tides is based on David Flater's XTide v2.12.1, which is available under the GNU Public License. Under that license, we are obliged to provide the source to Eye Tide, which will be available on this site soon.