It would be great to be able to input actual tide seen on site and have this saved/plotted over the graph.
My job involves docking/undocking of ships and tide is of vital importance. Tidal surges of 1' or greater are fairly common in my area, so I can't rely on only the forecasted tides. Normally I'm plotting tides on paper, but it would be great to have this on an offline smartphone so I'm not dealing with paper/rain/weather issues.
Seperately from just plotting live data on screen - It would also be awesome (albeit more difficult) to take the actual tide input and generate a predicted actual tide plot.