Im surprized that this software is not called iTides. I live near the ocean and have grand kids to entertain. Its always a treat to take them to the beach at low tide and this software fills the bill nicely to help with that. It works well. One nice feature is that I can run it for dates in the future looking for especuially low tides during the daylight hours. If I hold my iPod upright I get information on sunrise and sunset as well as high and low tides. If I lay it on its side I get a graphical chart of high and low tides. Its just great. It does not do away with the need for tide and current tables for the mariner but it is perfect for the grampas, grammas, and their grand kids exploring the coast line. Very compact. A tide table book cant easily fit in a coat pocket, an iPod or iPhone can.
Northernscout about AyeTides