No longer works. No response from support.
I think this app may have "died?" No longer works at all. At least not on iPhone6 running latest iOS 9.3.4 NO tidal predictions for ANY ports. And no response from support. And this was a paid for app...
Limited information but good
ONly provides time and height of tides without any graphs or where in the current cycle of incoming or outgoingtide one is. However, only tide chart I could find for UK.