Imray Tides Planner It contains the tidal heights for standard and secondary ports around the world, this app will work out the height of tide at any given time simply by choosing a port, a date and then moving the slider. One also has a built-in Tidal Atlas for the UK, Channel Islands. Choose a chart and a date and then scroll through the tidal hours. The app shows you the springs or neaps rates for any tidal hour.
The basic app is free but this only shows the current day’s tide table. Getting UK, Ireland tide tables for any date in the future costs £5.99. The interactive tidal stream atlas costs £5.99 and is valid for any future date.